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Finding the Fourth Proportional to 72,474.36, 108,695.13 and 33,042.75

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Solution

The fourth proportional to 72,474.36, 108,695.13 and 33,042.75 is: 49,556.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,474.36 : 108,695.13 = 33,042.75 : x
  2. Step 2: Convert to fraction form
    72,474.36/108,695.13 = 33,042.75/x
  3. Step 3: Cross multiply
    72,474.36x = 108,695.13 × 33,042.75
  4. Step 4: Simplify right side
    72,474.36x = 3,591,586,006.81
  5. Step 5: Solve for x
    x = 3,591,586,006.81/72,474.36
  6. Step 6: Final answer
    x = 49,556.64

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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.