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Finding the Fourth Proportional to 13,375.53, 18,458.37 and 7,407.36

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Solution

The fourth proportional to 13,375.53, 18,458.37 and 7,407.36 is: 10,222.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,375.53 : 18,458.37 = 7,407.36 : x
  2. Step 2: Convert to fraction form
    13,375.53/18,458.37 = 7,407.36/x
  3. Step 3: Cross multiply
    13,375.53x = 18,458.37 × 7,407.36
  4. Step 4: Simplify right side
    13,375.53x = 136,727,791.60
  5. Step 5: Solve for x
    x = 136,727,791.60/13,375.53
  6. Step 6: Final answer
    x = 10,222.23

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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.