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Finding the Third Proportional to 30,912.75 and 41,991.75

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Solution

The third proportional to 30,912.75 and 41,991.75 is: 57,041.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,912.75 : 41,991.75 = 41,991.75 : x
  2. Step 2: Convert to fraction form
    30,912.75/41,991.75 = 41,991.75/x
  3. Step 3: Cross multiply
    30,912.75x = 41,991.75 × 41,991.75
  4. Step 4: Simplify right side
    30,912.75x = 1,763,307,068.06
  5. Step 5: Solve for x
    x = 1,763,307,068.06/30,912.75
  6. Step 6: Final answer
    x = 57,041.42

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.