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Finding the Third Proportional to 16,890 and 36,754

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Solution

The third proportional to 16,890 and 36,754 is: 79,979.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,890 : 36,754 = 36,754 : x
  2. Step 2: Convert to fraction form
    16,890/36,754 = 36,754/x
  3. Step 3: Cross multiply
    16,890x = 36,754 × 36,754
  4. Step 4: Simplify right side
    16,890x = 1,350,856,516
  5. Step 5: Solve for x
    x = 1,350,856,516/16,890
  6. Step 6: Final answer
    x = 79,979.66

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.