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Finding the Fourth Proportional to 15,078.16, 22,619.29 and 5,214.79

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Solution

The fourth proportional to 15,078.16, 22,619.29 and 5,214.79 is: 7,822.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,078.16 : 22,619.29 = 5,214.79 : x
  2. Step 2: Convert to fraction form
    15,078.16/22,619.29 = 5,214.79/x
  3. Step 3: Cross multiply
    15,078.16x = 22,619.29 × 5,214.79
  4. Step 4: Simplify right side
    15,078.16x = 117,954,847.30
  5. Step 5: Solve for x
    x = 117,954,847.30/15,078.16
  6. Step 6: Final answer
    x = 7,822.89

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