The fraction 45/55 is equal to 81.82% when converted to a percentage. This means that if you had 55 items and took 45 of them, you'd have about 82% of the total. It's a pretty high percentage, showing that 45 is close to 55 in value.
In everyday life, you might see this fraction used in various situations. For example, if 45 out of 55 students passed a test, the pass rate would be 81.82%. Or if a sports team won 45 games out of 55 played, their winning percentage would be the same. It's a useful way to express parts of a whole or compare different quantities.