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Finding the Third Proportional to 4,188 and 5,328

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Solution

The third proportional to 4,188 and 5,328 is: 6,778.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,188 : 5,328 = 5,328 : x
  2. Step 2: Convert to fraction form
    4,188/5,328 = 5,328/x
  3. Step 3: Cross multiply
    4,188x = 5,328 × 5,328
  4. Step 4: Simplify right side
    4,188x = 28,387,584
  5. Step 5: Solve for x
    x = 28,387,584/4,188
  6. Step 6: Final answer
    x = 6,778.32

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.