Power BI - Calculate Measure When Blank Value

I created 3 ways to calculate these measures

//First calculate the SUM
.ValorAPOSum = SUM('TABLE'[Valor])

//After SUM, First way
.ValorAPO1_Sum = DIVIDE(CALCULATE([.ValorAPOSum], DATESINPERIOD(Calendario[Date], LASTDATE(Calendario[Date])-1, -7, DAY)), 7,0)
.ValorAPO1 = if(ISBLANK([.ValorAPOSum]),[.ValorAPO1_Sum],[.ValorAPOSum])
.ValorAPO1_All = SUMX(Calendario,[.ValorAPO1])

//After SUM, Second way
.ValorAPOSumMoving = CALCULATE([.ValorAPOSum],DATESINPERIOD(Calendario[Date],LASTDATE(Calendario[Date]),-7,DAY))
.ValorAPO2_Sum = [.ValorAPOSumMoving]/CALCULATE(DISTINCTCOUNT(Calendario[Date]),DATESINPERIOD(Calendario[Date],LASTDATE(Calendario[Date]),-7,DAY))
.ValorAPO2 = if(ISBLANK([.ValorAPOSum]),[.ValorAPO2_Sum],[.ValorAPOSum])
.ValorAPO2_All = SUMX(Calendario,[.ValorAPO2])

//After SUM, Third way
.ValorAPO3_AVG =
VAR LAST_DATE = LASTDATE(Calendario[Date])
Var Sum_7 = calculate([.ValorAPOSum],DATESBETWEEN(Calendario[Date],DATEADD(LAST_DATE, -6, DAY),LAST_DATE))
Var Sum_all_7 = calculate([Valor APO],DATESBETWEEN(Calendario[Date],DATEADD(LAST_DATE, -6, DAY),LAST_DATE))
//return divide(Sum_7 ,Sum_all_7)
return divide(Sum_7,7)
.ValorAPO3 = if(ISBLANK([.ValorAPOSum]),[.ValorAPO3_AVG],[.ValorAPOSum])
.ValorAPO3_All = SUMX(Calendario,[.ValorAPO3])

//Count Table relations .QtdCountry2 = COUNTROWS(

FILTER(DIM_Continente_Locations,

CONTAINS(FAT_Corona3,FAT_Corona3[Country_Other],DIM_Continente_Locations[Country_Name.1])))

Power BI - Creating Tax measure between two tables

Table_Moviments:

Table_Tax

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.00YYYYMMDD = MAX(Table_Moviments[a_YYYYMMDD])

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.01GetTax = 

Var v_Val01 = "Variavel01"

return

CALCULATE(SUM(Table_Tax[ValorHora]),

          FILTER(Table_Tax,

          Table_Tax[Referencia] = v_Val01 && 

          Table_Tax[DataInicial] <= [.00YYYYMMDD]&& 

          Table_Tax[DataFinal] >= [.00YYYYMMDD]

          )

        )

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.02GetTaxGroup = SUMX(

                SUMMARIZE(

                    Table_Moviments,

                    Table_Moviments[a_TicketPrio],

                    Table_Moviments[a_TicketDate]),

                    [.01GetTax]

)

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.03QtdHoursRealGroup = SUMX(

                SUMMARIZE(

                    FATTickets_WorkLogs, 

                    FATTickets_WorkLogs[a_TicketPrio],

                    FATTickets_WorkLogs[a_TicketDate]),

                    [HoursMov])

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.04VlrCostRealGroup = SUMX(

                SUMMARIZE(

                    Table_Moviments,

                    Table_Moviments[a_TicketPrio],

                    Table_Moviments[a_TicketDate]),

                    ([.03QtdHoursRealGroup]*[.02GetTaxGroup])

)

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