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Finding the Fourth Proportional to 55,860.81, 83,773.41 and 18,413.90

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Solution

The fourth proportional to 55,860.81, 83,773.41 and 18,413.90 is: 27,614.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,860.81 : 83,773.41 = 18,413.90 : x
  2. Step 2: Convert to fraction form
    55,860.81/83,773.41 = 18,413.90/x
  3. Step 3: Cross multiply
    55,860.81x = 83,773.41 × 18,413.90
  4. Step 4: Simplify right side
    55,860.81x = 1,542,595,020.63
  5. Step 5: Solve for x
    x = 1,542,595,020.63/55,860.81
  6. Step 6: Final answer
    x = 27,614.98

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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.