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Finding the Fourth Proportional to 5,153.99, 7,731.55 and 1,643.18

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Solution

The fourth proportional to 5,153.99, 7,731.55 and 1,643.18 is: 2,464.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,153.99 : 7,731.55 = 1,643.18 : x
  2. Step 2: Convert to fraction form
    5,153.99/7,731.55 = 1,643.18/x
  3. Step 3: Cross multiply
    5,153.99x = 7,731.55 × 1,643.18
  4. Step 4: Simplify right side
    5,153.99x = 12,704,281.46
  5. Step 5: Solve for x
    x = 12,704,281.46/5,153.99
  6. Step 6: Final answer
    x = 2,464.94

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