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Finding the Fourth Proportional to 172,890.56, 238,593.20 and 96,408.91

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Solution

The fourth proportional to 172,890.56, 238,593.20 and 96,408.91 is: 133,046.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,890.56 : 238,593.20 = 96,408.91 : x
  2. Step 2: Convert to fraction form
    172,890.56/238,593.20 = 96,408.91/x
  3. Step 3: Cross multiply
    172,890.56x = 238,593.20 × 96,408.91
  4. Step 4: Simplify right side
    172,890.56x = 23,002,510,161.61
  5. Step 5: Solve for x
    x = 23,002,510,161.61/172,890.56
  6. Step 6: Final answer
    x = 133,046.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.