Question 389669
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Hi,         
weight W of an object is directly proportional to its weight B on earth
Let x represent the weight on Mars for man weighing 98kg on earth
question Sets Up the Proportion
{{{118.75kg/47.5kg = 98kg/x}}}
Solving for x
 98*47.5 = 118.75x
  98*47.5/118.75 = x
             x = 39.2kg, the weight on Mars for man weighing 98kg on earth
CHECKING our Answer
118.75kg/47.5kg = 2.5 = 98/39.2