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Finding the Fourth Proportional to 453,158.74, 679,693.98 and 137,618.38

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Solution

The fourth proportional to 453,158.74, 679,693.98 and 137,618.38 is: 206,414.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,158.74 : 679,693.98 = 137,618.38 : x
  2. Step 2: Convert to fraction form
    453,158.74/679,693.98 = 137,618.38/x
  3. Step 3: Cross multiply
    453,158.74x = 679,693.98 × 137,618.38
  4. Step 4: Simplify right side
    453,158.74x = 93,538,384,423.35
  5. Step 5: Solve for x
    x = 93,538,384,423.35/453,158.74
  6. Step 6: Final answer
    x = 206,414.17

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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.