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Finding the Fourth Proportional to 17,920.31, 24,724.24 and 9,961.00

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Solution

The fourth proportional to 17,920.31, 24,724.24 and 9,961.00 is: 13,742.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,920.31 : 24,724.24 = 9,961.00 : x
  2. Step 2: Convert to fraction form
    17,920.31/24,724.24 = 9,961.00/x
  3. Step 3: Cross multiply
    17,920.31x = 24,724.24 × 9,961.00
  4. Step 4: Simplify right side
    17,920.31x = 246,278,067.93
  5. Step 5: Solve for x
    x = 246,278,067.93/17,920.31
  6. Step 6: Final answer
    x = 13,742.96

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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.