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Finding the Third Proportional to 7,960 and 12,432

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Solution

The third proportional to 7,960 and 12,432 is: 19,416.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,960 : 12,432 = 12,432 : x
  2. Step 2: Convert to fraction form
    7,960/12,432 = 12,432/x
  3. Step 3: Cross multiply
    7,960x = 12,432 × 12,432
  4. Step 4: Simplify right side
    7,960x = 154,554,624
  5. Step 5: Solve for x
    x = 154,554,624/7,960
  6. Step 6: Final answer
    x = 19,416.41

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.