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Finding the Fourth Proportional to 12,361.80, 18,542.66 and 3,596.80

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Solution

The fourth proportional to 12,361.80, 18,542.66 and 3,596.80 is: 5,395.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,361.80 : 18,542.66 = 3,596.80 : x
  2. Step 2: Convert to fraction form
    12,361.80/18,542.66 = 3,596.80/x
  3. Step 3: Cross multiply
    12,361.80x = 18,542.66 × 3,596.80
  4. Step 4: Simplify right side
    12,361.80x = 66,694,239.49
  5. Step 5: Solve for x
    x = 66,694,239.49/12,361.80
  6. Step 6: Final answer
    x = 5,395.19

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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.