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Finding the Third Proportional to 7,344 and 12,336

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Solution

The third proportional to 7,344 and 12,336 is: 20,721.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,344 : 12,336 = 12,336 : x
  2. Step 2: Convert to fraction form
    7,344/12,336 = 12,336/x
  3. Step 3: Cross multiply
    7,344x = 12,336 × 12,336
  4. Step 4: Simplify right side
    7,344x = 152,176,896
  5. Step 5: Solve for x
    x = 152,176,896/7,344
  6. Step 6: Final answer
    x = 20,721.25

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Why These Related Problems?

These problems maintain the same ratio (1.68) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.