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Finding the Fourth Proportional to 66,337.92, 91,565.64 and 53,002.08

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Solution

The fourth proportional to 66,337.92, 91,565.64 and 53,002.08 is: 73,158.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,337.92 : 91,565.64 = 53,002.08 : x
  2. Step 2: Convert to fraction form
    66,337.92/91,565.64 = 53,002.08/x
  3. Step 3: Cross multiply
    66,337.92x = 91,565.64 × 53,002.08
  4. Step 4: Simplify right side
    66,337.92x = 4,853,169,376.53
  5. Step 5: Solve for x
    x = 4,853,169,376.53/66,337.92
  6. Step 6: Final answer
    x = 73,158.30

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Why These Related Problems?

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