The statement, Japanese term for hanging scrolls is Emakimono, is true.
There's no official answer, it's pretty much saying "Who did the first shot in the Boston Massacre?"
However, the term "Hip-Hop" was coined by Keith Cowboy, who was a rapper with Grandmaster Flash and the Furious Five.
The origin of Hip-Hop was in the 70's when there were block parties in the Bronx and the crowd was mainly African-American.
Some would say DJ Kool Herc is the person who started it.
Answer:
A proportion is simply a statement that two ratios are equal. It can be written in two ways: as two equal fractions a/b = c/d; or using a colon, a:b = c:d. The following proportion is read as "twenty is to twenty-five as four is to five.