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Finding the Fourth Proportional to 55,993.78, 84,027.58 and 20,933.44

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Solution

The fourth proportional to 55,993.78, 84,027.58 and 20,933.44 is: 31,413.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,993.78 : 84,027.58 = 20,933.44 : x
  2. Step 2: Convert to fraction form
    55,993.78/84,027.58 = 20,933.44/x
  3. Step 3: Cross multiply
    55,993.78x = 84,027.58 × 20,933.44
  4. Step 4: Simplify right side
    55,993.78x = 1,758,986,041.87
  5. Step 5: Solve for x
    x = 1,758,986,041.87/55,993.78
  6. Step 6: Final answer
    x = 31,413.95

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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.