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Finding the Fourth Proportional to 111,112.82, 166,474.80 and 92,512.34

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Solution

The fourth proportional to 111,112.82, 166,474.80 and 92,512.34 is: 138,606.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,112.82 : 166,474.80 = 92,512.34 : x
  2. Step 2: Convert to fraction form
    111,112.82/166,474.80 = 92,512.34/x
  3. Step 3: Cross multiply
    111,112.82x = 166,474.80 × 92,512.34
  4. Step 4: Simplify right side
    111,112.82x = 15,400,973,299.03
  5. Step 5: Solve for x
    x = 15,400,973,299.03/111,112.82
  6. Step 6: Final answer
    x = 138,606.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.