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Finding the Fourth Proportional to 69,003.20, 103,479.20 and 27,441.60

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Solution

The fourth proportional to 69,003.20, 103,479.20 and 27,441.60 is: 41,152.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,003.20 : 103,479.20 = 27,441.60 : x
  2. Step 2: Convert to fraction form
    69,003.20/103,479.20 = 27,441.60/x
  3. Step 3: Cross multiply
    69,003.20x = 103,479.20 × 27,441.60
  4. Step 4: Simplify right side
    69,003.20x = 2,839,634,814.72
  5. Step 5: Solve for x
    x = 2,839,634,814.72/69,003.20
  6. Step 6: Final answer
    x = 41,152.22

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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.