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Finding the Fourth Proportional to 579,198.90, 868,785.72 and 158,474.76

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Solution

The fourth proportional to 579,198.90, 868,785.72 and 158,474.76 is: 237,708.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,198.90 : 868,785.72 = 158,474.76 : x
  2. Step 2: Convert to fraction form
    579,198.90/868,785.72 = 158,474.76/x
  3. Step 3: Cross multiply
    579,198.90x = 868,785.72 × 158,474.76
  4. Step 4: Simplify right side
    579,198.90x = 137,680,608,468.43
  5. Step 5: Solve for x
    x = 137,680,608,468.43/579,198.90
  6. Step 6: Final answer
    x = 237,708.68

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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.