How to reduce Power BI model size with decimal ,float and money datatype

Hi All,

I have created power bi model by importing data from Warehouse. However, I have  FactTables with 3 different dataTypes decimal(38,7), float and money. All this 3 columns occupies more space. Can you please suggest how can i reduce the model size. I can't round off the numbers since this are business decision metrics.

Thanks,

Abhiram