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Finding the Fourth Proportional to 5,382.24, 8,074.08 and 1,918.32

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Solution

The fourth proportional to 5,382.24, 8,074.08 and 1,918.32 is: 2,877.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,382.24 : 8,074.08 = 1,918.32 : x
  2. Step 2: Convert to fraction form
    5,382.24/8,074.08 = 1,918.32/x
  3. Step 3: Cross multiply
    5,382.24x = 8,074.08 × 1,918.32
  4. Step 4: Simplify right side
    5,382.24x = 15,488,669.15
  5. Step 5: Solve for x
    x = 15,488,669.15/5,382.24
  6. Step 6: Final answer
    x = 2,877.74

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