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Finding the Third Proportional to 10,420 and 16,192

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Solution

The third proportional to 10,420 and 16,192 is: 25,161.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420 : 16,192 = 16,192 : x
  2. Step 2: Convert to fraction form
    10,420/16,192 = 16,192/x
  3. Step 3: Cross multiply
    10,420x = 16,192 × 16,192
  4. Step 4: Simplify right side
    10,420x = 262,180,864
  5. Step 5: Solve for x
    x = 262,180,864/10,420
  6. Step 6: Final answer
    x = 25,161.31

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.