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Finding the Third Proportional to 10,856.25 and 16,239

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Solution

The third proportional to 10,856.25 and 16,239 is: 24,290.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,856.25 : 16,239 = 16,239 : x
  2. Step 2: Convert to fraction form
    10,856.25/16,239 = 16,239/x
  3. Step 3: Cross multiply
    10,856.25x = 16,239 × 16,239
  4. Step 4: Simplify right side
    10,856.25x = 263,705,121
  5. Step 5: Solve for x
    x = 263,705,121/10,856.25
  6. Step 6: Final answer
    x = 24,290.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.