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Finding the Fourth Proportional to 91,850.73, 137,647.77 and 49,639.81

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Solution

The fourth proportional to 91,850.73, 137,647.77 and 49,639.81 is: 74,390.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,850.73 : 137,647.77 = 49,639.81 : x
  2. Step 2: Convert to fraction form
    91,850.73/137,647.77 = 49,639.81/x
  3. Step 3: Cross multiply
    91,850.73x = 137,647.77 × 49,639.81
  4. Step 4: Simplify right side
    91,850.73x = 6,832,808,461.48
  5. Step 5: Solve for x
    x = 6,832,808,461.48/91,850.73
  6. Step 6: Final answer
    x = 74,390.36

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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.