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Finding the Fourth Proportional to 225,108.92, 337,663.89 and 91,989.17

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Solution

The fourth proportional to 225,108.92, 337,663.89 and 91,989.17 is: 137,983.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,108.92 : 337,663.89 = 91,989.17 : x
  2. Step 2: Convert to fraction form
    225,108.92/337,663.89 = 91,989.17/x
  3. Step 3: Cross multiply
    225,108.92x = 337,663.89 × 91,989.17
  4. Step 4: Simplify right side
    225,108.92x = 31,061,420,557.99
  5. Step 5: Solve for x
    x = 31,061,420,557.99/225,108.92
  6. Step 6: Final answer
    x = 137,983.96

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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.