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Finding the Third Proportional to 18,840 and 25,188

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Solution

The third proportional to 18,840 and 25,188 is: 33,674.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,840 : 25,188 = 25,188 : x
  2. Step 2: Convert to fraction form
    18,840/25,188 = 25,188/x
  3. Step 3: Cross multiply
    18,840x = 25,188 × 25,188
  4. Step 4: Simplify right side
    18,840x = 634,435,344
  5. Step 5: Solve for x
    x = 634,435,344/18,840
  6. Step 6: Final answer
    x = 33,674.91

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.