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Finding the Third Proportional to 5,226 and 8,156

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Solution

The third proportional to 5,226 and 8,156 is: 12,728.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,226 : 8,156 = 8,156 : x
  2. Step 2: Convert to fraction form
    5,226/8,156 = 8,156/x
  3. Step 3: Cross multiply
    5,226x = 8,156 × 8,156
  4. Step 4: Simplify right side
    5,226x = 66,520,336
  5. Step 5: Solve for x
    x = 66,520,336/5,226
  6. Step 6: Final answer
    x = 12,728.73

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.