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Finding the Fourth Proportional to 80,613.72, 120,942.70 and 24,455.66

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Solution

The fourth proportional to 80,613.72, 120,942.70 and 24,455.66 is: 36,690.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,613.72 : 120,942.70 = 24,455.66 : x
  2. Step 2: Convert to fraction form
    80,613.72/120,942.70 = 24,455.66/x
  3. Step 3: Cross multiply
    80,613.72x = 120,942.70 × 24,455.66
  4. Step 4: Simplify right side
    80,613.72x = 2,957,733,550.68
  5. Step 5: Solve for x
    x = 2,957,733,550.68/80,613.72
  6. Step 6: Final answer
    x = 36,690.20

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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.