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Finding the Fourth Proportional to 78,873.74, 108,855.31 and 44,890.49

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Solution

The fourth proportional to 78,873.74, 108,855.31 and 44,890.49 is: 61,954.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,873.74 : 108,855.31 = 44,890.49 : x
  2. Step 2: Convert to fraction form
    78,873.74/108,855.31 = 44,890.49/x
  3. Step 3: Cross multiply
    78,873.74x = 108,855.31 × 44,890.49
  4. Step 4: Simplify right side
    78,873.74x = 4,886,568,449.08
  5. Step 5: Solve for x
    x = 4,886,568,449.08/78,873.74
  6. Step 6: Final answer
    x = 61,954.31

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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.