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Finding the Fourth Proportional to 14,694.33, 20,278.17 and 7,979.97

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Solution

The fourth proportional to 14,694.33, 20,278.17 and 7,979.97 is: 11,012.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,694.33 : 20,278.17 = 7,979.97 : x
  2. Step 2: Convert to fraction form
    14,694.33/20,278.17 = 7,979.97/x
  3. Step 3: Cross multiply
    14,694.33x = 20,278.17 × 7,979.97
  4. Step 4: Simplify right side
    14,694.33x = 161,819,188.25
  5. Step 5: Solve for x
    x = 161,819,188.25/14,694.33
  6. Step 6: Final answer
    x = 11,012.36

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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.