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Finding the Fourth Proportional to 91,850.87, 137,647.96 and 49,639.95

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Solution

The fourth proportional to 91,850.87, 137,647.96 and 49,639.95 is: 74,390.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,850.87 : 137,647.96 = 49,639.95 : x
  2. Step 2: Convert to fraction form
    91,850.87/137,647.96 = 49,639.95/x
  3. Step 3: Cross multiply
    91,850.87x = 137,647.96 × 49,639.95
  4. Step 4: Simplify right side
    91,850.87x = 6,832,837,727.90
  5. Step 5: Solve for x
    x = 6,832,837,727.90/91,850.87
  6. Step 6: Final answer
    x = 74,390.56

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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.