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Finding the Fourth Proportional to 367,617.90, 551,491.65 and 131,097.90

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Solution

The fourth proportional to 367,617.90, 551,491.65 and 131,097.90 is: 196,669.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,617.90 : 551,491.65 = 131,097.90 : x
  2. Step 2: Convert to fraction form
    367,617.90/551,491.65 = 131,097.90/x
  3. Step 3: Cross multiply
    367,617.90x = 551,491.65 × 131,097.90
  4. Step 4: Simplify right side
    367,617.90x = 72,299,397,182.54
  5. Step 5: Solve for x
    x = 72,299,397,182.54/367,617.90
  6. Step 6: Final answer
    x = 196,669.96

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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.