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Finding the Fourth Proportional to 26,391.73, 39,591.71 and 8,865.67

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Solution

The fourth proportional to 26,391.73, 39,591.71 and 8,865.67 is: 13,299.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,391.73 : 39,591.71 = 8,865.67 : x
  2. Step 2: Convert to fraction form
    26,391.73/39,591.71 = 8,865.67/x
  3. Step 3: Cross multiply
    26,391.73x = 39,591.71 × 8,865.67
  4. Step 4: Simplify right side
    26,391.73x = 351,007,035.60
  5. Step 5: Solve for x
    x = 351,007,035.60/26,391.73
  6. Step 6: Final answer
    x = 13,299.89

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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.