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Finding the Third Proportional to 4,523.31 and 9,966.90

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Solution

The third proportional to 4,523.31 and 9,966.90 is: 21,961.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,523.31 : 9,966.90 = 9,966.90 : x
  2. Step 2: Convert to fraction form
    4,523.31/9,966.90 = 9,966.90/x
  3. Step 3: Cross multiply
    4,523.31x = 9,966.90 × 9,966.90
  4. Step 4: Simplify right side
    4,523.31x = 99,339,142.33
  5. Step 5: Solve for x
    x = 99,339,142.33/4,523.31
  6. Step 6: Final answer
    x = 21,961.61

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.