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Finding the Third Proportional to 20,124 and 38,423

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Solution

The third proportional to 20,124 and 38,423 is: 73,361.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124 : 38,423 = 38,423 : x
  2. Step 2: Convert to fraction form
    20,124/38,423 = 38,423/x
  3. Step 3: Cross multiply
    20,124x = 38,423 × 38,423
  4. Step 4: Simplify right side
    20,124x = 1,476,326,929
  5. Step 5: Solve for x
    x = 1,476,326,929/20,124
  6. Step 6: Final answer
    x = 73,361.51

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Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.