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Finding the Fourth Proportional to 2,786.96, 4,181.72 and 1,419.92

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Solution

The fourth proportional to 2,786.96, 4,181.72 and 1,419.92 is: 2,130.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.96 : 4,181.72 = 1,419.92 : x
  2. Step 2: Convert to fraction form
    2,786.96/4,181.72 = 1,419.92/x
  3. Step 3: Cross multiply
    2,786.96x = 4,181.72 × 1,419.92
  4. Step 4: Simplify right side
    2,786.96x = 5,937,707.86
  5. Step 5: Solve for x
    x = 5,937,707.86/2,786.96
  6. Step 6: Final answer
    x = 2,130.53

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