AverageX with dynamic denominator

Hi Friends

My snowflake data model contains many-to-many relationships

This is intentional because I want to use multiple values from the fact table to calculate separate indicators.

I need to use AverageX because I need to divide each Indicator[Name] by the denominator given in the Indicator Details[Denominator] table

The problem is in the dynamic selection of the denominator according to the Denominator column in the Indicator detail table. Could someone help me solve this?

Thank you

with only one selected denominator:

PBIX to download 

Total Count = 
COUNTROWS( 'Fact Table' )

Average = 
    AVERAGEX(
        VALUES('Indicator Details'[Name]),
            [Total Count] /
            var _denominator = SELECTEDVALUE( 'Indicator Details'[Denominator] ) 
            var _denominatorValue = 
               SWITCH( 
                TRUE(),
                _denominator = "Measure A", [Denominator 1],
                _denominator = "Measure B", [Denominator 2],
                _denominator = "Measure C", [Denominator 3]
               )
            return
            _denominatorValue
    )

This is example only:

Denominator 1 = 10 
Denominator 2 = 20
Denominator 3 = 30

Indicator table:
IndicatorIndicator ID

Indicator Details:

Indicator IDNameDenominator