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Finding the Fourth Proportional to 391,599.45, 587,399.63 and 107,292.42

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Solution

The fourth proportional to 391,599.45, 587,399.63 and 107,292.42 is: 160,938.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,599.45 : 587,399.63 = 107,292.42 : x
  2. Step 2: Convert to fraction form
    391,599.45/587,399.63 = 107,292.42/x
  3. Step 3: Cross multiply
    391,599.45x = 587,399.63 × 107,292.42
  4. Step 4: Simplify right side
    391,599.45x = 63,023,527,273.34
  5. Step 5: Solve for x
    x = 63,023,527,273.34/391,599.45
  6. Step 6: Final answer
    x = 160,938.75

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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.