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Finding the Third Proportional to 16,872 and 26,865

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Solution

The third proportional to 16,872 and 26,865 is: 42,776.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,872 : 26,865 = 26,865 : x
  2. Step 2: Convert to fraction form
    16,872/26,865 = 26,865/x
  3. Step 3: Cross multiply
    16,872x = 26,865 × 26,865
  4. Step 4: Simplify right side
    16,872x = 721,728,225
  5. Step 5: Solve for x
    x = 721,728,225/16,872
  6. Step 6: Final answer
    x = 42,776.68

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.