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Finding the Fourth Proportional to 453,012.71, 679,523.13 and 137,469.59

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Solution

The fourth proportional to 453,012.71, 679,523.13 and 137,469.59 is: 206,205.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,012.71 : 679,523.13 = 137,469.59 : x
  2. Step 2: Convert to fraction form
    453,012.71/679,523.13 = 137,469.59/x
  3. Step 3: Cross multiply
    453,012.71x = 679,523.13 × 137,469.59
  4. Step 4: Simplify right side
    453,012.71x = 93,413,766,076.62
  5. Step 5: Solve for x
    x = 93,413,766,076.62/453,012.71
  6. Step 6: Final answer
    x = 206,205.62

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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.