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Finding the Third Proportional to 5,478 and 12,048

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Solution

The third proportional to 5,478 and 12,048 is: 26,497.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478 : 12,048 = 12,048 : x
  2. Step 2: Convert to fraction form
    5,478/12,048 = 12,048/x
  3. Step 3: Cross multiply
    5,478x = 12,048 × 12,048
  4. Step 4: Simplify right side
    5,478x = 145,154,304
  5. Step 5: Solve for x
    x = 145,154,304/5,478
  6. Step 6: Final answer
    x = 26,497.68

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.