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Finding the Third Proportional to 11,740.50 and 20,997

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Solution

The third proportional to 11,740.50 and 20,997 is: 37,551.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,740.50 : 20,997 = 20,997 : x
  2. Step 2: Convert to fraction form
    11,740.50/20,997 = 20,997/x
  3. Step 3: Cross multiply
    11,740.50x = 20,997 × 20,997
  4. Step 4: Simplify right side
    11,740.50x = 440,874,009
  5. Step 5: Solve for x
    x = 440,874,009/11,740.50
  6. Step 6: Final answer
    x = 37,551.55

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Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.