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Finding the Fourth Proportional to 78,843.09, 108,793.89 and 44,855.90

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Solution

The fourth proportional to 78,843.09, 108,793.89 and 44,855.90 is: 61,895.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,843.09 : 108,793.89 = 44,855.90 : x
  2. Step 2: Convert to fraction form
    78,843.09/108,793.89 = 44,855.90/x
  3. Step 3: Cross multiply
    78,843.09x = 108,793.89 × 44,855.90
  4. Step 4: Simplify right side
    78,843.09x = 4,880,047,850.45
  5. Step 5: Solve for x
    x = 4,880,047,850.45/78,843.09
  6. Step 6: Final answer
    x = 61,895.69

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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.