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Finding the Fourth Proportional to 5,457.72, 7,531.70 and 3,099.92

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Solution

The fourth proportional to 5,457.72, 7,531.70 and 3,099.92 is: 4,277.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,457.72 : 7,531.70 = 3,099.92 : x
  2. Step 2: Convert to fraction form
    5,457.72/7,531.70 = 3,099.92/x
  3. Step 3: Cross multiply
    5,457.72x = 7,531.70 × 3,099.92
  4. Step 4: Simplify right side
    5,457.72x = 23,347,667.46
  5. Step 5: Solve for x
    x = 23,347,667.46/5,457.72
  6. Step 6: Final answer
    x = 4,277.92

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.