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Finding the Third Proportional to 11,608 and 15,486

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Solution

The third proportional to 11,608 and 15,486 is: 20,659.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,608 : 15,486 = 15,486 : x
  2. Step 2: Convert to fraction form
    11,608/15,486 = 15,486/x
  3. Step 3: Cross multiply
    11,608x = 15,486 × 15,486
  4. Step 4: Simplify right side
    11,608x = 239,816,196
  5. Step 5: Solve for x
    x = 239,816,196/11,608
  6. Step 6: Final answer
    x = 20,659.56

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.