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Finding the Fourth Proportional to 91,761.84, 137,600.52 and 36,319.92

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Solution

The fourth proportional to 91,761.84, 137,600.52 and 36,319.92 is: 54,463.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,761.84 : 137,600.52 = 36,319.92 : x
  2. Step 2: Convert to fraction form
    91,761.84/137,600.52 = 36,319.92/x
  3. Step 3: Cross multiply
    91,761.84x = 137,600.52 × 36,319.92
  4. Step 4: Simplify right side
    91,761.84x = 4,997,639,878.36
  5. Step 5: Solve for x
    x = 4,997,639,878.36/91,761.84
  6. Step 6: Final answer
    x = 54,463.16

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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.