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Finding the Fourth Proportional to 18,372.32, 27,540.66 and 7,275.32

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Solution

The fourth proportional to 18,372.32, 27,540.66 and 7,275.32 is: 10,905.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,372.32 : 27,540.66 = 7,275.32 : x
  2. Step 2: Convert to fraction form
    18,372.32/27,540.66 = 7,275.32/x
  3. Step 3: Cross multiply
    18,372.32x = 27,540.66 × 7,275.32
  4. Step 4: Simplify right side
    18,372.32x = 200,367,114.51
  5. Step 5: Solve for x
    x = 200,367,114.51/18,372.32
  6. Step 6: Final answer
    x = 10,905.92

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.