Progress of measure in time from 2 tables with non-unique date columns

Hi everyone,

I would appreciate your help on this one:

I have a measure that sums the values from table 1 and divides this result with the count of rows from table 2.

• Now the problem is that I would like to show the progress of this measure over time.
• Table 1&2 both include a date column with non unique values (meaning that for each date corresponds multiple values/rows )
• My idea was to create a new table with my own unique dates and try for each unique date to
  • look up the sum of values from table 1 corresponding to that date
  • look up the count of rows from table 2 corresponding to that date

So far I haven't been successful to do that. I believe it should be a combination of "CALCULATE() and LOOKUPVALUE" but I had quite many failed attempts do far.

I'm looking forward to your suggestions and/or alternative approaches!