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Finding the Fourth Proportional to 13,903.40, 20,850.99 and 7,325.99

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Solution

The fourth proportional to 13,903.40, 20,850.99 and 7,325.99 is: 10,986.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,903.40 : 20,850.99 = 7,325.99 : x
  2. Step 2: Convert to fraction form
    13,903.40/20,850.99 = 7,325.99/x
  3. Step 3: Cross multiply
    13,903.40x = 20,850.99 × 7,325.99
  4. Step 4: Simplify right side
    13,903.40x = 152,754,269.79
  5. Step 5: Solve for x
    x = 152,754,269.79/13,903.40
  6. Step 6: Final answer
    x = 10,986.83

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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.