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Finding the Fourth Proportional to 48,692.68, 73,067.60 and 20,611

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Solution

The fourth proportional to 48,692.68, 73,067.60 and 20,611 is: 30,928.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,692.68 : 73,067.60 = 20,611 : x
  2. Step 2: Convert to fraction form
    48,692.68/73,067.60 = 20,611/x
  3. Step 3: Cross multiply
    48,692.68x = 73,067.60 × 20,611
  4. Step 4: Simplify right side
    48,692.68x = 1,505,996,303.60
  5. Step 5: Solve for x
    x = 1,505,996,303.60/48,692.68
  6. Step 6: Final answer
    x = 30,928.60

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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.