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Finding the Fourth Proportional to 13,317.75, 18,378.46 and 7,349.37

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Solution

The fourth proportional to 13,317.75, 18,378.46 and 7,349.37 is: 10,142.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,317.75 : 18,378.46 = 7,349.37 : x
  2. Step 2: Convert to fraction form
    13,317.75/18,378.46 = 7,349.37/x
  3. Step 3: Cross multiply
    13,317.75x = 18,378.46 × 7,349.37
  4. Step 4: Simplify right side
    13,317.75x = 135,070,102.57
  5. Step 5: Solve for x
    x = 135,070,102.57/13,317.75
  6. Step 6: Final answer
    x = 10,142.11

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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.