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Finding the Fourth Proportional to 367,630.70, 551,446.05 and 131,240.30

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Solution

The fourth proportional to 367,630.70, 551,446.05 and 131,240.30 is: 196,860.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,630.70 : 551,446.05 = 131,240.30 : x
  2. Step 2: Convert to fraction form
    367,630.70/551,446.05 = 131,240.30/x
  3. Step 3: Cross multiply
    367,630.70x = 551,446.05 × 131,240.30
  4. Step 4: Simplify right side
    367,630.70x = 72,371,945,035.82
  5. Step 5: Solve for x
    x = 72,371,945,035.82/367,630.70
  6. Step 6: Final answer
    x = 196,860.45

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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.