Plss help me guys☹️
Draw a ❤️ if the given show proportion and draw a ☀️ if it doesn't show proportion

___ a. 3:9 = 9:27
___ b. 7:1 = 5:3
___ c. 15:5 = 5:15
___ d. 8:2 = 4:1
___ e. 6:20 = 12:40​