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Finding the Fourth Proportional to 78,659.44, 108,559.56 and 44,678.56

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Solution

The fourth proportional to 78,659.44, 108,559.56 and 44,678.56 is: 61,661.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,659.44 : 108,559.56 = 44,678.56 : x
  2. Step 2: Convert to fraction form
    78,659.44/108,559.56 = 44,678.56/x
  3. Step 3: Cross multiply
    78,659.44x = 108,559.56 × 44,678.56
  4. Step 4: Simplify right side
    78,659.44x = 4,850,284,815.03
  5. Step 5: Solve for x
    x = 4,850,284,815.03/78,659.44
  6. Step 6: Final answer
    x = 61,661.83

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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.