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Finding the Fourth Proportional to 417,892.20, 626,691.36 and 151,607.40

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Solution

The fourth proportional to 417,892.20, 626,691.36 and 151,607.40 is: 227,357.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,892.20 : 626,691.36 = 151,607.40 : x
  2. Step 2: Convert to fraction form
    417,892.20/626,691.36 = 151,607.40/x
  3. Step 3: Cross multiply
    417,892.20x = 626,691.36 × 151,607.40
  4. Step 4: Simplify right side
    417,892.20x = 95,011,047,692.06
  5. Step 5: Solve for x
    x = 95,011,047,692.06/417,892.20
  6. Step 6: Final answer
    x = 227,357.79

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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.