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Finding the Third Proportional to 20,005.25 and 43,111

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Solution

The third proportional to 20,005.25 and 43,111 is: 92,903.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,005.25 : 43,111 = 43,111 : x
  2. Step 2: Convert to fraction form
    20,005.25/43,111 = 43,111/x
  3. Step 3: Cross multiply
    20,005.25x = 43,111 × 43,111
  4. Step 4: Simplify right side
    20,005.25x = 1,858,558,321
  5. Step 5: Solve for x
    x = 1,858,558,321/20,005.25
  6. Step 6: Final answer
    x = 92,903.53

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.