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Finding the Fourth Proportional to 71,900.80, 107,851.20 and 27,504.70

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Solution

The fourth proportional to 71,900.80, 107,851.20 and 27,504.70 is: 41,257.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,900.80 : 107,851.20 = 27,504.70 : x
  2. Step 2: Convert to fraction form
    71,900.80/107,851.20 = 27,504.70/x
  3. Step 3: Cross multiply
    71,900.80x = 107,851.20 × 27,504.70
  4. Step 4: Simplify right side
    71,900.80x = 2,966,414,900.64
  5. Step 5: Solve for x
    x = 2,966,414,900.64/71,900.80
  6. Step 6: Final answer
    x = 41,257.05

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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.