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Finding the Fourth Proportional to 168,500.91, 252,626.43 and 79,650.57

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Solution

The fourth proportional to 168,500.91, 252,626.43 and 79,650.57 is: 119,416.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,500.91 : 252,626.43 = 79,650.57 : x
  2. Step 2: Convert to fraction form
    168,500.91/252,626.43 = 79,650.57/x
  3. Step 3: Cross multiply
    168,500.91x = 252,626.43 × 79,650.57
  4. Step 4: Simplify right side
    168,500.91x = 20,121,839,146.57
  5. Step 5: Solve for x
    x = 20,121,839,146.57/168,500.91
  6. Step 6: Final answer
    x = 119,416.80

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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.