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Finding the Third Proportional to 10,381.50 and 16,119

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Solution

The third proportional to 10,381.50 and 16,119 is: 25,027.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,381.50 : 16,119 = 16,119 : x
  2. Step 2: Convert to fraction form
    10,381.50/16,119 = 16,119/x
  3. Step 3: Cross multiply
    10,381.50x = 16,119 × 16,119
  4. Step 4: Simplify right side
    10,381.50x = 259,822,161
  5. Step 5: Solve for x
    x = 259,822,161/10,381.50
  6. Step 6: Final answer
    x = 25,027.42

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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.