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Finding the Fourth Proportional to 69,919.32, 104,797.61 and 39,954.56

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Solution

The fourth proportional to 69,919.32, 104,797.61 and 39,954.56 is: 59,885.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,919.32 : 104,797.61 = 39,954.56 : x
  2. Step 2: Convert to fraction form
    69,919.32/104,797.61 = 39,954.56/x
  3. Step 3: Cross multiply
    69,919.32x = 104,797.61 × 39,954.56
  4. Step 4: Simplify right side
    69,919.32x = 4,187,142,396.60
  5. Step 5: Solve for x
    x = 4,187,142,396.60/69,919.32
  6. Step 6: Final answer
    x = 59,885.34

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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.