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Finding the Fourth Proportional to 89,129.25, 133,691.14 and 36,499.09

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Solution

The fourth proportional to 89,129.25, 133,691.14 and 36,499.09 is: 54,747.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,129.25 : 133,691.14 = 36,499.09 : x
  2. Step 2: Convert to fraction form
    89,129.25/133,691.14 = 36,499.09/x
  3. Step 3: Cross multiply
    89,129.25x = 133,691.14 × 36,499.09
  4. Step 4: Simplify right side
    89,129.25x = 4,879,604,951.06
  5. Step 5: Solve for x
    x = 4,879,604,951.06/89,129.25
  6. Step 6: Final answer
    x = 54,747.51

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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.