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Finding the Third Proportional to 7,236 and 11,878

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Solution

The third proportional to 7,236 and 11,878 is: 19,497.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,236 : 11,878 = 11,878 : x
  2. Step 2: Convert to fraction form
    7,236/11,878 = 11,878/x
  3. Step 3: Cross multiply
    7,236x = 11,878 × 11,878
  4. Step 4: Simplify right side
    7,236x = 141,086,884
  5. Step 5: Solve for x
    x = 141,086,884/7,236
  6. Step 6: Final answer
    x = 19,497.91

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.