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Finding the Fourth Proportional to 78,558.57, 108,413.27 and 44,568.49

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Solution

The fourth proportional to 78,558.57, 108,413.27 and 44,568.49 is: 61,505.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,558.57 : 108,413.27 = 44,568.49 : x
  2. Step 2: Convert to fraction form
    78,558.57/108,413.27 = 44,568.49/x
  3. Step 3: Cross multiply
    78,558.57x = 108,413.27 × 44,568.49
  4. Step 4: Simplify right side
    78,558.57x = 4,831,815,197.80
  5. Step 5: Solve for x
    x = 4,831,815,197.80/78,558.57
  6. Step 6: Final answer
    x = 61,505.90

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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.