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Finding the Third Proportional to 1,932 and 4,212

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Solution

The third proportional to 1,932 and 4,212 is: 9,182.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,932 : 4,212 = 4,212 : x
  2. Step 2: Convert to fraction form
    1,932/4,212 = 4,212/x
  3. Step 3: Cross multiply
    1,932x = 4,212 × 4,212
  4. Step 4: Simplify right side
    1,932x = 17,740,944
  5. Step 5: Solve for x
    x = 17,740,944/1,932
  6. Step 6: Final answer
    x = 9,182.68

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.