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Finding the Fourth Proportional to 391,259.01, 539,943.03 and 227,911.32

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Solution

The fourth proportional to 391,259.01, 539,943.03 and 227,911.32 is: 314,520.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,259.01 : 539,943.03 = 227,911.32 : x
  2. Step 2: Convert to fraction form
    391,259.01/539,943.03 = 227,911.32/x
  3. Step 3: Cross multiply
    391,259.01x = 539,943.03 × 227,911.32
  4. Step 4: Simplify right side
    391,259.01x = 123,059,128,692.10
  5. Step 5: Solve for x
    x = 123,059,128,692.10/391,259.01
  6. Step 6: Final answer
    x = 314,520.88

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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.