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Finding the Fourth Proportional to 404,489.20, 558,306.12 and 234,778

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Solution

The fourth proportional to 404,489.20, 558,306.12 and 234,778 is: 324,058.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,489.20 : 558,306.12 = 234,778 : x
  2. Step 2: Convert to fraction form
    404,489.20/558,306.12 = 234,778/x
  3. Step 3: Cross multiply
    404,489.20x = 558,306.12 × 234,778
  4. Step 4: Simplify right side
    404,489.20x = 131,077,994,241.36
  5. Step 5: Solve for x
    x = 131,077,994,241.36/404,489.20
  6. Step 6: Final answer
    x = 324,058.08

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