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Finding the Fourth Proportional to 74,202.25, 111,228.86 and 36,789.51

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Solution

The fourth proportional to 74,202.25, 111,228.86 and 36,789.51 is: 55,147.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,202.25 : 111,228.86 = 36,789.51 : x
  2. Step 2: Convert to fraction form
    74,202.25/111,228.86 = 36,789.51/x
  3. Step 3: Cross multiply
    74,202.25x = 111,228.86 × 36,789.51
  4. Step 4: Simplify right side
    74,202.25x = 4,092,055,257.26
  5. Step 5: Solve for x
    x = 4,092,055,257.26/74,202.25
  6. Step 6: Final answer
    x = 55,147.32

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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.