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Finding the Third Proportional to 13,516 and 19,876

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Solution

The third proportional to 13,516 and 19,876 is: 29,228.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,516 : 19,876 = 19,876 : x
  2. Step 2: Convert to fraction form
    13,516/19,876 = 19,876/x
  3. Step 3: Cross multiply
    13,516x = 19,876 × 19,876
  4. Step 4: Simplify right side
    13,516x = 395,055,376
  5. Step 5: Solve for x
    x = 395,055,376/13,516
  6. Step 6: Final answer
    x = 29,228.72

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.