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Finding the Fourth Proportional to 171,201.20, 256,874.70 and 108,069.80

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Solution

The fourth proportional to 171,201.20, 256,874.70 and 108,069.80 is: 162,150.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,201.20 : 256,874.70 = 108,069.80 : x
  2. Step 2: Convert to fraction form
    171,201.20/256,874.70 = 108,069.80/x
  3. Step 3: Cross multiply
    171,201.20x = 256,874.70 × 108,069.80
  4. Step 4: Simplify right side
    171,201.20x = 27,760,397,454.06
  5. Step 5: Solve for x
    x = 27,760,397,454.06/171,201.20
  6. Step 6: Final answer
    x = 162,150.72

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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.