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Finding the Fourth Proportional to 124,861.92, 187,344.72 and 65,741.28

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Solution

The fourth proportional to 124,861.92, 187,344.72 and 65,741.28 is: 98,639.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,861.92 : 187,344.72 = 65,741.28 : x
  2. Step 2: Convert to fraction form
    124,861.92/187,344.72 = 65,741.28/x
  3. Step 3: Cross multiply
    124,861.92x = 187,344.72 × 65,741.28
  4. Step 4: Simplify right side
    124,861.92x = 12,316,281,694.04
  5. Step 5: Solve for x
    x = 12,316,281,694.04/124,861.92
  6. Step 6: Final answer
    x = 98,639.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.