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Finding the Fourth Proportional to 18,728.36, 25,844.44 and 10,344.68

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Solution

The fourth proportional to 18,728.36, 25,844.44 and 10,344.68 is: 14,275.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,728.36 : 25,844.44 = 10,344.68 : x
  2. Step 2: Convert to fraction form
    18,728.36/25,844.44 = 10,344.68/x
  3. Step 3: Cross multiply
    18,728.36x = 25,844.44 × 10,344.68
  4. Step 4: Simplify right side
    18,728.36x = 267,352,461.58
  5. Step 5: Solve for x
    x = 267,352,461.58/18,728.36
  6. Step 6: Final answer
    x = 14,275.27

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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.