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Finding the Third Proportional to 4,782 and 7,384

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Solution

The third proportional to 4,782 and 7,384 is: 11,401.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,782 : 7,384 = 7,384 : x
  2. Step 2: Convert to fraction form
    4,782/7,384 = 7,384/x
  3. Step 3: Cross multiply
    4,782x = 7,384 × 7,384
  4. Step 4: Simplify right side
    4,782x = 54,523,456
  5. Step 5: Solve for x
    x = 54,523,456/4,782
  6. Step 6: Final answer
    x = 11,401.81

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.