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Finding the Fourth Proportional to 73,247.94, 109,876.20 and 28,269.54

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Solution

The fourth proportional to 73,247.94, 109,876.20 and 28,269.54 is: 42,405.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,247.94 : 109,876.20 = 28,269.54 : x
  2. Step 2: Convert to fraction form
    73,247.94/109,876.20 = 28,269.54/x
  3. Step 3: Cross multiply
    73,247.94x = 109,876.20 × 28,269.54
  4. Step 4: Simplify right side
    73,247.94x = 3,106,149,630.95
  5. Step 5: Solve for x
    x = 3,106,149,630.95/73,247.94
  6. Step 6: Final answer
    x = 42,405.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.