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Finding the Fourth Proportional to 89,116.80, 133,692.05 and 35,812.92

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Solution

The fourth proportional to 89,116.80, 133,692.05 and 35,812.92 is: 53,726.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,116.80 : 133,692.05 = 35,812.92 : x
  2. Step 2: Convert to fraction form
    89,116.80/133,692.05 = 35,812.92/x
  3. Step 3: Cross multiply
    89,116.80x = 133,692.05 × 35,812.92
  4. Step 4: Simplify right side
    89,116.80x = 4,787,902,691.29
  5. Step 5: Solve for x
    x = 4,787,902,691.29/89,116.80
  6. Step 6: Final answer
    x = 53,726.15

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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.