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Finding the Fourth Proportional to 391,598.91, 587,398.82 and 107,291.93

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Solution

The fourth proportional to 391,598.91, 587,398.82 and 107,291.93 is: 160,938.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,598.91 : 587,398.82 = 107,291.93 : x
  2. Step 2: Convert to fraction form
    391,598.91/587,398.82 = 107,291.93/x
  3. Step 3: Cross multiply
    391,598.91x = 587,398.82 × 107,291.93
  4. Step 4: Simplify right side
    391,598.91x = 63,023,149,604.07
  5. Step 5: Solve for x
    x = 63,023,149,604.07/391,598.91
  6. Step 6: Final answer
    x = 160,938.01

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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.