9
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Three positive integers have a sum of 72 and are in the ratio 1:3:4. What is the least of these three integers?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
9
Three positive integers have a sum of 72 and are in the ratio 1:3:4. What is the least of these three integers?
train