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Finding the Fourth Proportional to 264,627.87, 397,003.31 and 87,136.42

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Solution

The fourth proportional to 264,627.87, 397,003.31 and 87,136.42 is: 130,724.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,627.87 : 397,003.31 = 87,136.42 : x
  2. Step 2: Convert to fraction form
    264,627.87/397,003.31 = 87,136.42/x
  3. Step 3: Cross multiply
    264,627.87x = 397,003.31 × 87,136.42
  4. Step 4: Simplify right side
    264,627.87x = 34,593,447,161.55
  5. Step 5: Solve for x
    x = 34,593,447,161.55/264,627.87
  6. Step 6: Final answer
    x = 130,724.88

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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.