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Finding the Third Proportional to 18,997.50 and 27,126

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Solution

The third proportional to 18,997.50 and 27,126 is: 38,732.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,997.50 : 27,126 = 27,126 : x
  2. Step 2: Convert to fraction form
    18,997.50/27,126 = 27,126/x
  3. Step 3: Cross multiply
    18,997.50x = 27,126 × 27,126
  4. Step 4: Simplify right side
    18,997.50x = 735,819,876
  5. Step 5: Solve for x
    x = 735,819,876/18,997.50
  6. Step 6: Final answer
    x = 38,732.46

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.