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Finding the Fourth Proportional to 453,135.15, 679,658.67 and 137,594.79

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Solution

The fourth proportional to 453,135.15, 679,658.67 and 137,594.79 is: 206,378.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,135.15 : 679,658.67 = 137,594.79 : x
  2. Step 2: Convert to fraction form
    453,135.15/679,658.67 = 137,594.79/x
  3. Step 3: Cross multiply
    453,135.15x = 679,658.67 × 137,594.79
  4. Step 4: Simplify right side
    453,135.15x = 93,517,491,970.33
  5. Step 5: Solve for x
    x = 93,517,491,970.33/453,135.15
  6. Step 6: Final answer
    x = 206,378.81

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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.