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Finding the Fourth Proportional to 89,078.40, 122,928.17 and 48,794.67

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Solution

The fourth proportional to 89,078.40, 122,928.17 and 48,794.67 is: 67,336.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,078.40 : 122,928.17 = 48,794.67 : x
  2. Step 2: Convert to fraction form
    89,078.40/122,928.17 = 48,794.67/x
  3. Step 3: Cross multiply
    89,078.40x = 122,928.17 × 48,794.67
  4. Step 4: Simplify right side
    89,078.40x = 5,998,239,244.88
  5. Step 5: Solve for x
    x = 5,998,239,244.88/89,078.40
  6. Step 6: Final answer
    x = 67,336.63

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1.5x scale

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.