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Finding the Third Proportional to 11,905 and 17,716.50

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Solution

The third proportional to 11,905 and 17,716.50 is: 26,364.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,905 : 17,716.50 = 17,716.50 : x
  2. Step 2: Convert to fraction form
    11,905/17,716.50 = 17,716.50/x
  3. Step 3: Cross multiply
    11,905x = 17,716.50 × 17,716.50
  4. Step 4: Simplify right side
    11,905x = 313,874,372.25
  5. Step 5: Solve for x
    x = 313,874,372.25/11,905
  6. Step 6: Final answer
    x = 26,364.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.