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Finding the Fourth Proportional to 91,879.05, 137,791.19 and 35,727.87

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Solution

The fourth proportional to 91,879.05, 137,791.19 and 35,727.87 is: 53,581.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,879.05 : 137,791.19 = 35,727.87 : x
  2. Step 2: Convert to fraction form
    91,879.05/137,791.19 = 35,727.87/x
  3. Step 3: Cross multiply
    91,879.05x = 137,791.19 × 35,727.87
  4. Step 4: Simplify right side
    91,879.05x = 4,922,985,544.83
  5. Step 5: Solve for x
    x = 4,922,985,544.83/91,879.05
  6. Step 6: Final answer
    x = 53,581.15

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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.