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Finding the Fourth Proportional to 392,691.38, 541,758.18 and 227,088.76

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Solution

The fourth proportional to 392,691.38, 541,758.18 and 227,088.76 is: 313,292.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,691.38 : 541,758.18 = 227,088.76 : x
  2. Step 2: Convert to fraction form
    392,691.38/541,758.18 = 227,088.76/x
  3. Step 3: Cross multiply
    392,691.38x = 541,758.18 × 227,088.76
  4. Step 4: Simplify right side
    392,691.38x = 123,027,193,316.06
  5. Step 5: Solve for x
    x = 123,027,193,316.06/392,691.38
  6. Step 6: Final answer
    x = 313,292.32

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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.