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Finding the Third Proportional to 7,412 and 15,660

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Solution

The third proportional to 7,412 and 15,660 is: 33,086.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,412 : 15,660 = 15,660 : x
  2. Step 2: Convert to fraction form
    7,412/15,660 = 15,660/x
  3. Step 3: Cross multiply
    7,412x = 15,660 × 15,660
  4. Step 4: Simplify right side
    7,412x = 245,235,600
  5. Step 5: Solve for x
    x = 245,235,600/7,412
  6. Step 6: Final answer
    x = 33,086.29

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.