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Finding the Fourth Proportional to 60,338.52, 90,520.80 and 20,361.54

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Solution

The fourth proportional to 60,338.52, 90,520.80 and 20,361.54 is: 30,546.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,338.52 : 90,520.80 = 20,361.54 : x
  2. Step 2: Convert to fraction form
    60,338.52/90,520.80 = 20,361.54/x
  3. Step 3: Cross multiply
    60,338.52x = 90,520.80 × 20,361.54
  4. Step 4: Simplify right side
    60,338.52x = 1,843,142,890.03
  5. Step 5: Solve for x
    x = 1,843,142,890.03/60,338.52
  6. Step 6: Final answer
    x = 30,546.70

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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.