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Finding the Fourth Proportional to 392,311.31, 541,250.37 and 256,423.73

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Solution

The fourth proportional to 392,311.31, 541,250.37 and 256,423.73 is: 353,773.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,311.31 : 541,250.37 = 256,423.73 : x
  2. Step 2: Convert to fraction form
    392,311.31/541,250.37 = 256,423.73/x
  3. Step 3: Cross multiply
    392,311.31x = 541,250.37 × 256,423.73
  4. Step 4: Simplify right side
    392,311.31x = 138,789,436,033.03
  5. Step 5: Solve for x
    x = 138,789,436,033.03/392,311.31
  6. Step 6: Final answer
    x = 353,773.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.