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Finding the Fourth Proportional to 527,031.60, 791,065.80 and 261,092.40

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Solution

The fourth proportional to 527,031.60, 791,065.80 and 261,092.40 is: 391,895.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,031.60 : 791,065.80 = 261,092.40 : x
  2. Step 2: Convert to fraction form
    527,031.60/791,065.80 = 261,092.40/x
  3. Step 3: Cross multiply
    527,031.60x = 791,065.80 × 261,092.40
  4. Step 4: Simplify right side
    527,031.60x = 206,541,268,279.92
  5. Step 5: Solve for x
    x = 206,541,268,279.92/527,031.60
  6. Step 6: Final answer
    x = 391,895.42

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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.