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Finding the Fourth Proportional to 49,661.80, 74,435.10 and 20,060.20

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Solution

The fourth proportional to 49,661.80, 74,435.10 and 20,060.20 is: 30,067.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,661.80 : 74,435.10 = 20,060.20 : x
  2. Step 2: Convert to fraction form
    49,661.80/74,435.10 = 20,060.20/x
  3. Step 3: Cross multiply
    49,661.80x = 74,435.10 × 20,060.20
  4. Step 4: Simplify right side
    49,661.80x = 1,493,182,993.02
  5. Step 5: Solve for x
    x = 1,493,182,993.02/49,661.80
  6. Step 6: Final answer
    x = 30,067.03

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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.