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Finding the Fourth Proportional to 447,690.61, 671,608.86 and 132,179.41

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Solution

The fourth proportional to 447,690.61, 671,608.86 and 132,179.41 is: 198,290.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,690.61 : 671,608.86 = 132,179.41 : x
  2. Step 2: Convert to fraction form
    447,690.61/671,608.86 = 132,179.41/x
  3. Step 3: Cross multiply
    447,690.61x = 671,608.86 × 132,179.41
  4. Step 4: Simplify right side
    447,690.61x = 88,772,862,865.57
  5. Step 5: Solve for x
    x = 88,772,862,865.57/447,690.61
  6. Step 6: Final answer
    x = 198,290.65

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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.