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Finding the Fourth Proportional to 69,672.75, 96,148.58 and 40,993.49

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Solution

The fourth proportional to 69,672.75, 96,148.58 and 40,993.49 is: 56,571.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,672.75 : 96,148.58 = 40,993.49 : x
  2. Step 2: Convert to fraction form
    69,672.75/96,148.58 = 40,993.49/x
  3. Step 3: Cross multiply
    69,672.75x = 96,148.58 × 40,993.49
  4. Step 4: Simplify right side
    69,672.75x = 3,941,465,167.03
  5. Step 5: Solve for x
    x = 3,941,465,167.03/69,672.75
  6. Step 6: Final answer
    x = 56,571.12

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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.