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Finding the Fourth Proportional to 121,167.92, 181,780.62 and 38,061.92

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Solution

The fourth proportional to 121,167.92, 181,780.62 and 38,061.92 is: 57,101.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,167.92 : 181,780.62 = 38,061.92 : x
  2. Step 2: Convert to fraction form
    121,167.92/181,780.62 = 38,061.92/x
  3. Step 3: Cross multiply
    121,167.92x = 181,780.62 × 38,061.92
  4. Step 4: Simplify right side
    121,167.92x = 6,918,919,415.99
  5. Step 5: Solve for x
    x = 6,918,919,415.99/121,167.92
  6. Step 6: Final answer
    x = 57,101.91

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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.