The author posted a question in Science, Technology, Languages
how to solve the problem correctly? and got a better answer
Response from Антон Владимирович[+++++]
Response from 0[+++++]
Proportion 9300 - 4200 2720 - x=2720*4200:9300=1228
Proportion 9300 - 4200 2720 - x=2720*4200:9300=1228