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Finding the Third Proportional to 11,181.38 and 15,670.13

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Solution

The third proportional to 11,181.38 and 15,670.13 is: 21,960.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,181.38 : 15,670.13 = 15,670.13 : x
  2. Step 2: Convert to fraction form
    11,181.38/15,670.13 = 15,670.13/x
  3. Step 3: Cross multiply
    11,181.38x = 15,670.13 × 15,670.13
  4. Step 4: Simplify right side
    11,181.38x = 245,552,817.52
  5. Step 5: Solve for x
    x = 245,552,817.52/11,181.38
  6. Step 6: Final answer
    x = 21,960.88

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.