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Finding the Fourth Proportional to 367,613.20, 551,419.80 and 131,222.80

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Solution

The fourth proportional to 367,613.20, 551,419.80 and 131,222.80 is: 196,834.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,613.20 : 551,419.80 = 131,222.80 : x
  2. Step 2: Convert to fraction form
    367,613.20/551,419.80 = 131,222.80/x
  3. Step 3: Cross multiply
    367,613.20x = 551,419.80 × 131,222.80
  4. Step 4: Simplify right side
    367,613.20x = 72,358,850,131.44
  5. Step 5: Solve for x
    x = 72,358,850,131.44/367,613.20
  6. Step 6: Final answer
    x = 196,834.20

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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.