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Finding the Fourth Proportional to 201,591.38, 278,080.38 and 126,008.66

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Solution

The fourth proportional to 201,591.38, 278,080.38 and 126,008.66 is: 173,819.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,591.38 : 278,080.38 = 126,008.66 : x
  2. Step 2: Convert to fraction form
    201,591.38/278,080.38 = 126,008.66/x
  3. Step 3: Cross multiply
    201,591.38x = 278,080.38 × 126,008.66
  4. Step 4: Simplify right side
    201,591.38x = 35,040,536,751.29
  5. Step 5: Solve for x
    x = 35,040,536,751.29/201,591.38
  6. Step 6: Final answer
    x = 173,819.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.