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Finding the Fourth Proportional to 45,147.87, 67,825.62 and 31,851.45

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Solution

The fourth proportional to 45,147.87, 67,825.62 and 31,851.45 is: 47,850.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,147.87 : 67,825.62 = 31,851.45 : x
  2. Step 2: Convert to fraction form
    45,147.87/67,825.62 = 31,851.45/x
  3. Step 3: Cross multiply
    45,147.87x = 67,825.62 × 31,851.45
  4. Step 4: Simplify right side
    45,147.87x = 2,160,344,344.15
  5. Step 5: Solve for x
    x = 2,160,344,344.15/45,147.87
  6. Step 6: Final answer
    x = 47,850.42

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.