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Finding the Fourth Proportional to 70,882.71, 106,333.79 and 20,966.73

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Solution

The fourth proportional to 70,882.71, 106,333.79 and 20,966.73 is: 31,452.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,882.71 : 106,333.79 = 20,966.73 : x
  2. Step 2: Convert to fraction form
    70,882.71/106,333.79 = 20,966.73/x
  3. Step 3: Cross multiply
    70,882.71x = 106,333.79 × 20,966.73
  4. Step 4: Simplify right side
    70,882.71x = 2,229,471,759.97
  5. Step 5: Solve for x
    x = 2,229,471,759.97/70,882.71
  6. Step 6: Final answer
    x = 31,452.97

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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.