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Finding the Third Proportional to 21,508 and 47,256

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Solution

The third proportional to 21,508 and 47,256 is: 103,827.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,508 : 47,256 = 47,256 : x
  2. Step 2: Convert to fraction form
    21,508/47,256 = 47,256/x
  3. Step 3: Cross multiply
    21,508x = 47,256 × 47,256
  4. Step 4: Simplify right side
    21,508x = 2,233,129,536
  5. Step 5: Solve for x
    x = 2,233,129,536/21,508
  6. Step 6: Final answer
    x = 103,827.86

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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.