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Finding the Fourth Proportional to 16,380.80, 24,571.20 and 5,991.20

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Solution

The fourth proportional to 16,380.80, 24,571.20 and 5,991.20 is: 8,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,380.80 : 24,571.20 = 5,991.20 : x
  2. Step 2: Convert to fraction form
    16,380.80/24,571.20 = 5,991.20/x
  3. Step 3: Cross multiply
    16,380.80x = 24,571.20 × 5,991.20
  4. Step 4: Simplify right side
    16,380.80x = 147,210,973.44
  5. Step 5: Solve for x
    x = 147,210,973.44/16,380.80
  6. Step 6: Final answer
    x = 8,986.80

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1.5x scale

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.