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Finding the Fourth Proportional to 13,350.88, 18,423.24 and 7,382.20

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Solution

The fourth proportional to 13,350.88, 18,423.24 and 7,382.20 is: 10,186.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,350.88 : 18,423.24 = 7,382.20 : x
  2. Step 2: Convert to fraction form
    13,350.88/18,423.24 = 7,382.20/x
  3. Step 3: Cross multiply
    13,350.88x = 18,423.24 × 7,382.20
  4. Step 4: Simplify right side
    13,350.88x = 136,004,042.33
  5. Step 5: Solve for x
    x = 136,004,042.33/13,350.88
  6. Step 6: Final answer
    x = 10,186.90

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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.