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Finding the Fourth Proportional to 5,787.98, 8,681.97 and 1,405.43

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Solution

The fourth proportional to 5,787.98, 8,681.97 and 1,405.43 is: 2,108.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,787.98 : 8,681.97 = 1,405.43 : x
  2. Step 2: Convert to fraction form
    5,787.98/8,681.97 = 1,405.43/x
  3. Step 3: Cross multiply
    5,787.98x = 8,681.97 × 1,405.43
  4. Step 4: Simplify right side
    5,787.98x = 12,201,901.10
  5. Step 5: Solve for x
    x = 12,201,901.10/5,787.98
  6. Step 6: Final answer
    x = 2,108.15

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