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Finding the Fourth Proportional to 74,791.80, 111,993.30 and 59,110.20

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Solution

The fourth proportional to 74,791.80, 111,993.30 and 59,110.20 is: 88,511.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,791.80 : 111,993.30 = 59,110.20 : x
  2. Step 2: Convert to fraction form
    74,791.80/111,993.30 = 59,110.20/x
  3. Step 3: Cross multiply
    74,791.80x = 111,993.30 × 59,110.20
  4. Step 4: Simplify right side
    74,791.80x = 6,619,946,361.66
  5. Step 5: Solve for x
    x = 6,619,946,361.66/74,791.80
  6. Step 6: Final answer
    x = 88,511.66

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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.