Muskegon is closer by about 20 miles.
Yes, Ada is closer to Grand Rapids.
Grand Rapids is closer to Chicago. It is in West Michigan, while Detroit is on the east side of the state.
Like most of the US, Michigan is closer to Spain than to Argentina.(Some southern locations of the US are closer to Argentina.)
Michigan is closest to Europe.
All of the lakes surround Michigan, so none of them are really closer/farther. But Lakes Huron and Superior touch more of Michigan than the others, so they could be "closer."
Argentina
The upper peninsula of MI
Rio grande
Rio grande
Rio grande
The Columbia river is closest to Michigan
The Columbia river is closest to Michigan