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Finding the Fourth Proportional to 48,940.20, 73,352.70 and 20,860.20

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Solution

The fourth proportional to 48,940.20, 73,352.70 and 20,860.20 is: 31,265.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,940.20 : 73,352.70 = 20,860.20 : x
  2. Step 2: Convert to fraction form
    48,940.20/73,352.70 = 20,860.20/x
  3. Step 3: Cross multiply
    48,940.20x = 73,352.70 × 20,860.20
  4. Step 4: Simplify right side
    48,940.20x = 1,530,151,992.54
  5. Step 5: Solve for x
    x = 1,530,151,992.54/48,940.20
  6. Step 6: Final answer
    x = 31,265.75

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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.