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Finding the Fourth Proportional to 13,103.94, 18,082.91 and 7,135.61

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Solution

The fourth proportional to 13,103.94, 18,082.91 and 7,135.61 is: 9,846.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,103.94 : 18,082.91 = 7,135.61 : x
  2. Step 2: Convert to fraction form
    13,103.94/18,082.91 = 7,135.61/x
  3. Step 3: Cross multiply
    13,103.94x = 18,082.91 × 7,135.61
  4. Step 4: Simplify right side
    13,103.94x = 129,032,467.33
  5. Step 5: Solve for x
    x = 129,032,467.33/13,103.94
  6. Step 6: Final answer
    x = 9,846.85

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.