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Finding the Fourth Proportional to 409,861.20, 614,791.80 and 232,714.20

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Solution

The fourth proportional to 409,861.20, 614,791.80 and 232,714.20 is: 349,071.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,861.20 : 614,791.80 = 232,714.20 : x
  2. Step 2: Convert to fraction form
    409,861.20/614,791.80 = 232,714.20/x
  3. Step 3: Cross multiply
    409,861.20x = 614,791.80 × 232,714.20
  4. Step 4: Simplify right side
    409,861.20x = 143,070,781,903.56
  5. Step 5: Solve for x
    x = 143,070,781,903.56/409,861.20
  6. Step 6: Final answer
    x = 349,071.30

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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.