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Finding the Third Proportional to 11,302.50 and 15,921

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Solution

The third proportional to 11,302.50 and 15,921 is: 22,426.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,302.50 : 15,921 = 15,921 : x
  2. Step 2: Convert to fraction form
    11,302.50/15,921 = 15,921/x
  3. Step 3: Cross multiply
    11,302.50x = 15,921 × 15,921
  4. Step 4: Simplify right side
    11,302.50x = 253,478,241
  5. Step 5: Solve for x
    x = 253,478,241/11,302.50
  6. Step 6: Final answer
    x = 22,426.74

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.