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Finding the Fourth Proportional to 624,714.30, 861,957.45 and 379,694.79

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Solution

The fourth proportional to 624,714.30, 861,957.45 and 379,694.79 is: 523,888.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,714.30 : 861,957.45 = 379,694.79 : x
  2. Step 2: Convert to fraction form
    624,714.30/861,957.45 = 379,694.79/x
  3. Step 3: Cross multiply
    624,714.30x = 861,957.45 × 379,694.79
  4. Step 4: Simplify right side
    624,714.30x = 327,280,752,966.69
  5. Step 5: Solve for x
    x = 327,280,752,966.69/624,714.30
  6. Step 6: Final answer
    x = 523,888.68

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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.