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Finding the Third Proportional to 30,786.75 and 47,112.75

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Solution

The third proportional to 30,786.75 and 47,112.75 is: 72,096.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,786.75 : 47,112.75 = 47,112.75 : x
  2. Step 2: Convert to fraction form
    30,786.75/47,112.75 = 47,112.75/x
  3. Step 3: Cross multiply
    30,786.75x = 47,112.75 × 47,112.75
  4. Step 4: Simplify right side
    30,786.75x = 2,219,611,212.56
  5. Step 5: Solve for x
    x = 2,219,611,212.56/30,786.75
  6. Step 6: Final answer
    x = 72,096.31

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.