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Finding the Fourth Proportional to 13,980.51, 20,972.79 and 4,617.32

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Solution

The fourth proportional to 13,980.51, 20,972.79 and 4,617.32 is: 6,926.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,980.51 : 20,972.79 = 4,617.32 : x
  2. Step 2: Convert to fraction form
    13,980.51/20,972.79 = 4,617.32/x
  3. Step 3: Cross multiply
    13,980.51x = 20,972.79 × 4,617.32
  4. Step 4: Simplify right side
    13,980.51x = 96,837,977.86
  5. Step 5: Solve for x
    x = 96,837,977.86/13,980.51
  6. Step 6: Final answer
    x = 6,926.64

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