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Finding the Fourth Proportional to 69,198.71, 103,765.25 and 35,885.43

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Solution

The fourth proportional to 69,198.71, 103,765.25 and 35,885.43 is: 53,811.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,198.71 : 103,765.25 = 35,885.43 : x
  2. Step 2: Convert to fraction form
    69,198.71/103,765.25 = 35,885.43/x
  3. Step 3: Cross multiply
    69,198.71x = 103,765.25 × 35,885.43
  4. Step 4: Simplify right side
    69,198.71x = 3,723,660,705.02
  5. Step 5: Solve for x
    x = 3,723,660,705.02/69,198.71
  6. Step 6: Final answer
    x = 53,811.13

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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.