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Finding the Fourth Proportional to 49,662.60, 74,493.90 and 16,387.80

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Solution

The fourth proportional to 49,662.60, 74,493.90 and 16,387.80 is: 24,581.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,662.60 : 74,493.90 = 16,387.80 : x
  2. Step 2: Convert to fraction form
    49,662.60/74,493.90 = 16,387.80/x
  3. Step 3: Cross multiply
    49,662.60x = 74,493.90 × 16,387.80
  4. Step 4: Simplify right side
    49,662.60x = 1,220,791,134.42
  5. Step 5: Solve for x
    x = 1,220,791,134.42/49,662.60
  6. Step 6: Final answer
    x = 24,581.70

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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.