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Finding the Fourth Proportional to 157,451.99, 217,289 and 93,781.13

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Solution

The fourth proportional to 157,451.99, 217,289 and 93,781.13 is: 129,421.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,451.99 : 217,289 = 93,781.13 : x
  2. Step 2: Convert to fraction form
    157,451.99/217,289 = 93,781.13/x
  3. Step 3: Cross multiply
    157,451.99x = 217,289 × 93,781.13
  4. Step 4: Simplify right side
    157,451.99x = 20,377,607,956.57
  5. Step 5: Solve for x
    x = 20,377,607,956.57/157,451.99
  6. Step 6: Final answer
    x = 129,421.09

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1.5x scale

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.