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Finding the Third Proportional to 5,192 and 7,981

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Solution

The third proportional to 5,192 and 7,981 is: 12,268.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,192 : 7,981 = 7,981 : x
  2. Step 2: Convert to fraction form
    5,192/7,981 = 7,981/x
  3. Step 3: Cross multiply
    5,192x = 7,981 × 7,981
  4. Step 4: Simplify right side
    5,192x = 63,696,361
  5. Step 5: Solve for x
    x = 63,696,361/5,192
  6. Step 6: Final answer
    x = 12,268.17

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.