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Finding the Third Proportional to 11,972 and 27,960

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Solution

The third proportional to 11,972 and 27,960 is: 65,299.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,972 : 27,960 = 27,960 : x
  2. Step 2: Convert to fraction form
    11,972/27,960 = 27,960/x
  3. Step 3: Cross multiply
    11,972x = 27,960 × 27,960
  4. Step 4: Simplify right side
    11,972x = 781,761,600
  5. Step 5: Solve for x
    x = 781,761,600/11,972
  6. Step 6: Final answer
    x = 65,299.16

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.