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Finding the Fourth Proportional to 363,943.80, 545,915.70 and 237,972.60

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Solution

The fourth proportional to 363,943.80, 545,915.70 and 237,972.60 is: 356,958.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,943.80 : 545,915.70 = 237,972.60 : x
  2. Step 2: Convert to fraction form
    363,943.80/545,915.70 = 237,972.60/x
  3. Step 3: Cross multiply
    363,943.80x = 545,915.70 × 237,972.60
  4. Step 4: Simplify right side
    363,943.80x = 129,912,978,509.82
  5. Step 5: Solve for x
    x = 129,912,978,509.82/363,943.80
  6. Step 6: Final answer
    x = 356,958.90

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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.