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Finding the Fourth Proportional to 96,637.20, 144,737.10 and 61,207.80

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Solution

The fourth proportional to 96,637.20, 144,737.10 and 61,207.80 is: 91,673.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,637.20 : 144,737.10 = 61,207.80 : x
  2. Step 2: Convert to fraction form
    96,637.20/144,737.10 = 61,207.80/x
  3. Step 3: Cross multiply
    96,637.20x = 144,737.10 × 61,207.80
  4. Step 4: Simplify right side
    96,637.20x = 8,859,039,469.38
  5. Step 5: Solve for x
    x = 8,859,039,469.38/96,637.20
  6. Step 6: Final answer
    x = 91,673.18

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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.