While I don't disagree that our higher murder rate is caused by (among MANY factors) a higher overall population than that of Germany, you have the basic population wrong.
Germany, according to the U.S. Census Bureau, had a population of about EIGHTY-TWO (82) million in 1998, NOT 7.5 million.
That makes the U.S. about 3.5 times as populated as Germany, NOT 38 times.
Let's make sure we have our facts straight here!!