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Finding the Fourth Proportional to 135,796.81, 187,399.59 and 75,367.44

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Solution

The fourth proportional to 135,796.81, 187,399.59 and 75,367.44 is: 104,007.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,796.81 : 187,399.59 = 75,367.44 : x
  2. Step 2: Convert to fraction form
    135,796.81/187,399.59 = 75,367.44/x
  3. Step 3: Cross multiply
    135,796.81x = 187,399.59 × 75,367.44
  4. Step 4: Simplify right side
    135,796.81x = 14,123,826,651.65
  5. Step 5: Solve for x
    x = 14,123,826,651.65/135,796.81
  6. Step 6: Final answer
    x = 104,007.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.