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Finding the Fourth Proportional to 409,324.44, 560,776.56 and 393,983.88

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Solution

The fourth proportional to 409,324.44, 560,776.56 and 393,983.88 is: 539,759.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,324.44 : 560,776.56 = 393,983.88 : x
  2. Step 2: Convert to fraction form
    409,324.44/560,776.56 = 393,983.88/x
  3. Step 3: Cross multiply
    409,324.44x = 560,776.56 × 393,983.88
  4. Step 4: Simplify right side
    409,324.44x = 220,936,924,921.85
  5. Step 5: Solve for x
    x = 220,936,924,921.85/409,324.44
  6. Step 6: Final answer
    x = 539,759.91

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.