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Finding the Fourth Proportional to 468,463.60, 702,637.20 and 131,530.72

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Solution

The fourth proportional to 468,463.60, 702,637.20 and 131,530.72 is: 197,279.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,463.60 : 702,637.20 = 131,530.72 : x
  2. Step 2: Convert to fraction form
    468,463.60/702,637.20 = 131,530.72/x
  3. Step 3: Cross multiply
    468,463.60x = 702,637.20 × 131,530.72
  4. Step 4: Simplify right side
    468,463.60x = 92,418,376,814.78
  5. Step 5: Solve for x
    x = 92,418,376,814.78/468,463.60
  6. Step 6: Final answer
    x = 197,279.74

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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.