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Finding the Fourth Proportional to 89,078.65, 122,928.51 and 48,794.92

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Solution

The fourth proportional to 89,078.65, 122,928.51 and 48,794.92 is: 67,336.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,078.65 : 122,928.51 = 48,794.92 : x
  2. Step 2: Convert to fraction form
    89,078.65/122,928.51 = 48,794.92/x
  3. Step 3: Cross multiply
    89,078.65x = 122,928.51 × 48,794.92
  4. Step 4: Simplify right side
    89,078.65x = 5,998,286,811.17
  5. Step 5: Solve for x
    x = 5,998,286,811.17/89,078.65
  6. Step 6: Final answer
    x = 67,336.97

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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.