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Finding the Fourth Proportional to 33,582.20, 50,330.10 and 20,420.60

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Solution

The fourth proportional to 33,582.20, 50,330.10 and 20,420.60 is: 30,604.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,582.20 : 50,330.10 = 20,420.60 : x
  2. Step 2: Convert to fraction form
    33,582.20/50,330.10 = 20,420.60/x
  3. Step 3: Cross multiply
    33,582.20x = 50,330.10 × 20,420.60
  4. Step 4: Simplify right side
    33,582.20x = 1,027,770,840.06
  5. Step 5: Solve for x
    x = 1,027,770,840.06/33,582.20
  6. Step 6: Final answer
    x = 30,604.63

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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.