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Finding the Fourth Proportional to 69,198.71, 95,509.73 and 45,311.50

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Solution

The fourth proportional to 69,198.71, 95,509.73 and 45,311.50 is: 62,540.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,198.71 : 95,509.73 = 45,311.50 : x
  2. Step 2: Convert to fraction form
    69,198.71/95,509.73 = 45,311.50/x
  3. Step 3: Cross multiply
    69,198.71x = 95,509.73 × 45,311.50
  4. Step 4: Simplify right side
    69,198.71x = 4,327,689,363.56
  5. Step 5: Solve for x
    x = 4,327,689,363.56/69,198.71
  6. Step 6: Final answer
    x = 62,540.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.