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Finding the Third Proportional to 4,718 and 7,311

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Solution

The third proportional to 4,718 and 7,311 is: 11,329.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,718 : 7,311 = 7,311 : x
  2. Step 2: Convert to fraction form
    4,718/7,311 = 7,311/x
  3. Step 3: Cross multiply
    4,718x = 7,311 × 7,311
  4. Step 4: Simplify right side
    4,718x = 53,450,721
  5. Step 5: Solve for x
    x = 53,450,721/4,718
  6. Step 6: Final answer
    x = 11,329.11

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.