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Finding the Fourth Proportional to 40,982.70, 61,474.05 and 40,326.60

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Solution

The fourth proportional to 40,982.70, 61,474.05 and 40,326.60 is: 60,489.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,982.70 : 61,474.05 = 40,326.60 : x
  2. Step 2: Convert to fraction form
    40,982.70/61,474.05 = 40,326.60/x
  3. Step 3: Cross multiply
    40,982.70x = 61,474.05 × 40,326.60
  4. Step 4: Simplify right side
    40,982.70x = 2,479,039,424.73
  5. Step 5: Solve for x
    x = 2,479,039,424.73/40,982.70
  6. Step 6: Final answer
    x = 60,489.90

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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.