Migrated database from 2008 R2 to 2012 getting wrong decimal precisions

Migrated SQL Server database from 2008R2 to 2012 using backup and restore option

When I do aggregate sum on both the databases 2008 and 2012 decimal precision is coming different. Because of this measure value in SSAS cube browser is calculated wrongly compared to 2008 R2 vs 2012

select SUM(rate) from [InfoDB]

2008 R2 Result
3029520.583895


2012 Result
3029520.58389499

Rate column is float data type Length 8, Precision 53, Scale is null

Please suggest if any work around for this.