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Finding the Third Proportional to 5,358 and 8,163

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Solution

The third proportional to 5,358 and 8,163 is: 12,436.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,358 : 8,163 = 8,163 : x
  2. Step 2: Convert to fraction form
    5,358/8,163 = 8,163/x
  3. Step 3: Cross multiply
    5,358x = 8,163 × 8,163
  4. Step 4: Simplify right side
    5,358x = 66,634,569
  5. Step 5: Solve for x
    x = 66,634,569/5,358
  6. Step 6: Final answer
    x = 12,436.46

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.