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Finding the Third Proportional to 11,776 and 18,236

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Solution

The third proportional to 11,776 and 18,236 is: 28,239.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,776 : 18,236 = 18,236 : x
  2. Step 2: Convert to fraction form
    11,776/18,236 = 18,236/x
  3. Step 3: Cross multiply
    11,776x = 18,236 × 18,236
  4. Step 4: Simplify right side
    11,776x = 332,551,696
  5. Step 5: Solve for x
    x = 332,551,696/11,776
  6. Step 6: Final answer
    x = 28,239.78

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.