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Finding the Fourth Proportional to 96,616.60, 144,752.10 and 81,755.80

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Solution

The fourth proportional to 96,616.60, 144,752.10 and 81,755.80 is: 122,487.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,616.60 : 144,752.10 = 81,755.80 : x
  2. Step 2: Convert to fraction form
    96,616.60/144,752.10 = 81,755.80/x
  3. Step 3: Cross multiply
    96,616.60x = 144,752.10 × 81,755.80
  4. Step 4: Simplify right side
    96,616.60x = 11,834,323,737.18
  5. Step 5: Solve for x
    x = 11,834,323,737.18/96,616.60
  6. Step 6: Final answer
    x = 122,487.48

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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.