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Finding the Third Proportional to 13,994 and 21,126

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Solution

The third proportional to 13,994 and 21,126 is: 31,892.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,994 : 21,126 = 21,126 : x
  2. Step 2: Convert to fraction form
    13,994/21,126 = 21,126/x
  3. Step 3: Cross multiply
    13,994x = 21,126 × 21,126
  4. Step 4: Simplify right side
    13,994x = 446,307,876
  5. Step 5: Solve for x
    x = 446,307,876/13,994
  6. Step 6: Final answer
    x = 31,892.80

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.