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Finding the Third Proportional to 4,872.38 and 11,781

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Solution

The third proportional to 4,872.38 and 11,781 is: 28,485.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,872.38 : 11,781 = 11,781 : x
  2. Step 2: Convert to fraction form
    4,872.38/11,781 = 11,781/x
  3. Step 3: Cross multiply
    4,872.38x = 11,781 × 11,781
  4. Step 4: Simplify right side
    4,872.38x = 138,791,961
  5. Step 5: Solve for x
    x = 138,791,961/4,872.38
  6. Step 6: Final answer
    x = 28,485.48

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Why These Related Problems?

These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.