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Finding the Fourth Proportional to 391,279.91, 587,141.98 and 166,616.91

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Solution

The fourth proportional to 391,279.91, 587,141.98 and 166,616.91 is: 250,019.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,279.91 : 587,141.98 = 166,616.91 : x
  2. Step 2: Convert to fraction form
    391,279.91/587,141.98 = 166,616.91/x
  3. Step 3: Cross multiply
    391,279.91x = 587,141.98 × 166,616.91
  4. Step 4: Simplify right side
    391,279.91x = 97,827,781,605.80
  5. Step 5: Solve for x
    x = 97,827,781,605.80/391,279.91
  6. Step 6: Final answer
    x = 250,019.95

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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.