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Finding the Third Proportional to 4,388 and 8,542

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Solution

The third proportional to 4,388 and 8,542 is: 16,628.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,388 : 8,542 = 8,542 : x
  2. Step 2: Convert to fraction form
    4,388/8,542 = 8,542/x
  3. Step 3: Cross multiply
    4,388x = 8,542 × 8,542
  4. Step 4: Simplify right side
    4,388x = 72,965,764
  5. Step 5: Solve for x
    x = 72,965,764/4,388
  6. Step 6: Final answer
    x = 16,628.48

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.