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Finding the Fourth Proportional to 71,979.75, 108,008.51 and 35,043.75

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Solution

The fourth proportional to 71,979.75, 108,008.51 and 35,043.75 is: 52,584.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,979.75 : 108,008.51 = 35,043.75 : x
  2. Step 2: Convert to fraction form
    71,979.75/108,008.51 = 35,043.75/x
  3. Step 3: Cross multiply
    71,979.75x = 108,008.51 × 35,043.75
  4. Step 4: Simplify right side
    71,979.75x = 3,785,023,047.09
  5. Step 5: Solve for x
    x = 3,785,023,047.09/71,979.75
  6. Step 6: Final answer
    x = 52,584.55

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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.