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Finding the Third Proportional to 4,212 and 9,234

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Solution

The third proportional to 4,212 and 9,234 is: 20,243.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212 : 9,234 = 9,234 : x
  2. Step 2: Convert to fraction form
    4,212/9,234 = 9,234/x
  3. Step 3: Cross multiply
    4,212x = 9,234 × 9,234
  4. Step 4: Simplify right side
    4,212x = 85,266,756
  5. Step 5: Solve for x
    x = 85,266,756/4,212
  6. Step 6: Final answer
    x = 20,243.77

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.