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Finding the Third Proportional to 1,940 and 4,192

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Solution

The third proportional to 1,940 and 4,192 is: 9,058.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940 : 4,192 = 4,192 : x
  2. Step 2: Convert to fraction form
    1,940/4,192 = 4,192/x
  3. Step 3: Cross multiply
    1,940x = 4,192 × 4,192
  4. Step 4: Simplify right side
    1,940x = 17,572,864
  5. Step 5: Solve for x
    x = 17,572,864/1,940
  6. Step 6: Final answer
    x = 9,058.18

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.