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Finding the Third Proportional to 11,065.50 and 16,921

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Solution

The third proportional to 11,065.50 and 16,921 is: 25,875.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,065.50 : 16,921 = 16,921 : x
  2. Step 2: Convert to fraction form
    11,065.50/16,921 = 16,921/x
  3. Step 3: Cross multiply
    11,065.50x = 16,921 × 16,921
  4. Step 4: Simplify right side
    11,065.50x = 286,320,241
  5. Step 5: Solve for x
    x = 286,320,241/11,065.50
  6. Step 6: Final answer
    x = 25,875.04

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.