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Finding the Third Proportional to 5,378 and 11,908

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Solution

The third proportional to 5,378 and 11,908 is: 26,366.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378 : 11,908 = 11,908 : x
  2. Step 2: Convert to fraction form
    5,378/11,908 = 11,908/x
  3. Step 3: Cross multiply
    5,378x = 11,908 × 11,908
  4. Step 4: Simplify right side
    5,378x = 141,800,464
  5. Step 5: Solve for x
    x = 141,800,464/5,378
  6. Step 6: Final answer
    x = 26,366.77

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.