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Finding the Third Proportional to 21,474 and 33,189

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Solution

The third proportional to 21,474 and 33,189 is: 51,295.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,474 : 33,189 = 33,189 : x
  2. Step 2: Convert to fraction form
    21,474/33,189 = 33,189/x
  3. Step 3: Cross multiply
    21,474x = 33,189 × 33,189
  4. Step 4: Simplify right side
    21,474x = 1,101,509,721
  5. Step 5: Solve for x
    x = 1,101,509,721/21,474
  6. Step 6: Final answer
    x = 51,295.04

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.