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Finding the Fourth Proportional to 69,245.96, 103,691.61 and 55,226.25

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Solution

The fourth proportional to 69,245.96, 103,691.61 and 55,226.25 is: 82,697.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,245.96 : 103,691.61 = 55,226.25 : x
  2. Step 2: Convert to fraction form
    69,245.96/103,691.61 = 55,226.25/x
  3. Step 3: Cross multiply
    69,245.96x = 103,691.61 × 55,226.25
  4. Step 4: Simplify right side
    69,245.96x = 5,726,498,776.76
  5. Step 5: Solve for x
    x = 5,726,498,776.76/69,245.96
  6. Step 6: Final answer
    x = 82,697.95

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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.