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Finding the Fourth Proportional to 80,494.52, 120,694.98 and 53,870.90

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Solution

The fourth proportional to 80,494.52, 120,694.98 and 53,870.90 is: 80,775.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,494.52 : 120,694.98 = 53,870.90 : x
  2. Step 2: Convert to fraction form
    80,494.52/120,694.98 = 53,870.90/x
  3. Step 3: Cross multiply
    80,494.52x = 120,694.98 × 53,870.90
  4. Step 4: Simplify right side
    80,494.52x = 6,501,947,198.08
  5. Step 5: Solve for x
    x = 6,501,947,198.08/80,494.52
  6. Step 6: Final answer
    x = 80,775.03

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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.