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Finding the Fourth Proportional to 87,310.92, 120,474.90 and 49,065.96

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Solution

The fourth proportional to 87,310.92, 120,474.90 and 49,065.96 is: 67,703.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,310.92 : 120,474.90 = 49,065.96 : x
  2. Step 2: Convert to fraction form
    87,310.92/120,474.90 = 49,065.96/x
  3. Step 3: Cross multiply
    87,310.92x = 120,474.90 × 49,065.96
  4. Step 4: Simplify right side
    87,310.92x = 5,911,216,624.40
  5. Step 5: Solve for x
    x = 5,911,216,624.40/87,310.92
  6. Step 6: Final answer
    x = 67,703.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.