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Finding the Fourth Proportional to 120,613.59, 180,861.89 and 36,358.04

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Solution

The fourth proportional to 120,613.59, 180,861.89 and 36,358.04 is: 54,519.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,613.59 : 180,861.89 = 36,358.04 : x
  2. Step 2: Convert to fraction form
    120,613.59/180,861.89 = 36,358.04/x
  3. Step 3: Cross multiply
    120,613.59x = 180,861.89 × 36,358.04
  4. Step 4: Simplify right side
    120,613.59x = 6,575,784,101.46
  5. Step 5: Solve for x
    x = 6,575,784,101.46/120,613.59
  6. Step 6: Final answer
    x = 54,519.43

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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.