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Finding the Fourth Proportional to 71,912.84, 107,870.13 and 27,542.25

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Solution

The fourth proportional to 71,912.84, 107,870.13 and 27,542.25 is: 41,313.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,912.84 : 107,870.13 = 27,542.25 : x
  2. Step 2: Convert to fraction form
    71,912.84/107,870.13 = 27,542.25/x
  3. Step 3: Cross multiply
    71,912.84x = 107,870.13 × 27,542.25
  4. Step 4: Simplify right side
    71,912.84x = 2,970,986,087.99
  5. Step 5: Solve for x
    x = 2,970,986,087.99/71,912.84
  6. Step 6: Final answer
    x = 41,313.71

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1.5x scale

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.