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Finding the Third Proportional to 5,218 and 8,234

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Solution

The third proportional to 5,218 and 8,234 is: 12,993.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218 : 8,234 = 8,234 : x
  2. Step 2: Convert to fraction form
    5,218/8,234 = 8,234/x
  3. Step 3: Cross multiply
    5,218x = 8,234 × 8,234
  4. Step 4: Simplify right side
    5,218x = 67,798,756
  5. Step 5: Solve for x
    x = 67,798,756/5,218
  6. Step 6: Final answer
    x = 12,993.25

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.