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Finding the Fourth Proportional to 391,256.38, 539,939.41 and 227,908.69

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Solution

The fourth proportional to 391,256.38, 539,939.41 and 227,908.69 is: 314,517.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,256.38 : 539,939.41 = 227,908.69 : x
  2. Step 2: Convert to fraction form
    391,256.38/539,939.41 = 227,908.69/x
  3. Step 3: Cross multiply
    391,256.38x = 539,939.41 × 227,908.69
  4. Step 4: Simplify right side
    391,256.38x = 123,056,881,692.85
  5. Step 5: Solve for x
    x = 123,056,881,692.85/391,256.38
  6. Step 6: Final answer
    x = 314,517.25

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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.