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Finding the Fourth Proportional to 391,773.31, 587,659.96 and 111,254.11

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Solution

The fourth proportional to 391,773.31, 587,659.96 and 111,254.11 is: 166,881.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,773.31 : 587,659.96 = 111,254.11 : x
  2. Step 2: Convert to fraction form
    391,773.31/587,659.96 = 111,254.11/x
  3. Step 3: Cross multiply
    391,773.31x = 587,659.96 × 111,254.11
  4. Step 4: Simplify right side
    391,773.31x = 65,379,584,502.35
  5. Step 5: Solve for x
    x = 65,379,584,502.35/391,773.31
  6. Step 6: Final answer
    x = 166,881.16

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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.