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Finding the Third Proportional to 13,928 and 16,112

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Solution

The third proportional to 13,928 and 16,112 is: 18,638.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928 : 16,112 = 16,112 : x
  2. Step 2: Convert to fraction form
    13,928/16,112 = 16,112/x
  3. Step 3: Cross multiply
    13,928x = 16,112 × 16,112
  4. Step 4: Simplify right side
    13,928x = 259,596,544
  5. Step 5: Solve for x
    x = 259,596,544/13,928
  6. Step 6: Final answer
    x = 18,638.47

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Why These Related Problems?

These problems maintain the same ratio (1.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.