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Finding the Third Proportional to 11,722 and 28,013

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Solution

The third proportional to 11,722 and 28,013 is: 66,944.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,722 : 28,013 = 28,013 : x
  2. Step 2: Convert to fraction form
    11,722/28,013 = 28,013/x
  3. Step 3: Cross multiply
    11,722x = 28,013 × 28,013
  4. Step 4: Simplify right side
    11,722x = 784,728,169
  5. Step 5: Solve for x
    x = 784,728,169/11,722
  6. Step 6: Final answer
    x = 66,944.90

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Why These Related Problems?

These problems maintain the same ratio (2.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.