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Finding the Third Proportional to 5,426 and 8,179

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Solution

The third proportional to 5,426 and 8,179 is: 12,328.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,426 : 8,179 = 8,179 : x
  2. Step 2: Convert to fraction form
    5,426/8,179 = 8,179/x
  3. Step 3: Cross multiply
    5,426x = 8,179 × 8,179
  4. Step 4: Simplify right side
    5,426x = 66,896,041
  5. Step 5: Solve for x
    x = 66,896,041/5,426
  6. Step 6: Final answer
    x = 12,328.79

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.