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Finding the Third Proportional to 16,931 and 36,687

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Solution

The third proportional to 16,931 and 36,687 is: 79,495.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,931 : 36,687 = 36,687 : x
  2. Step 2: Convert to fraction form
    16,931/36,687 = 36,687/x
  3. Step 3: Cross multiply
    16,931x = 36,687 × 36,687
  4. Step 4: Simplify right side
    16,931x = 1,345,935,969
  5. Step 5: Solve for x
    x = 1,345,935,969/16,931
  6. Step 6: Final answer
    x = 79,495.36

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.