readyfrog123ot51mh readyfrog123ot51mh 16-07-2017 Mathematics contestada Select all that apply. Which of the following represents the proportion 6 is to 9 as 12 is to 18? 1. 6/9 = 12/18 2. 6:9:12:18 3. 6/18 = 9/12 4. 6/12 = 9/18