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Finding the Third Proportional to 12,472 and 26,780

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Solution

The third proportional to 12,472 and 26,780 is: 57,502.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,472 : 26,780 = 26,780 : x
  2. Step 2: Convert to fraction form
    12,472/26,780 = 26,780/x
  3. Step 3: Cross multiply
    12,472x = 26,780 × 26,780
  4. Step 4: Simplify right side
    12,472x = 717,168,400
  5. Step 5: Solve for x
    x = 717,168,400/12,472
  6. Step 6: Final answer
    x = 57,502.28

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.