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Finding the Fourth Proportional to 12,480.94, 18,708.99 and 6,936.76

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Solution

The fourth proportional to 12,480.94, 18,708.99 and 6,936.76 is: 10,398.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.94 : 18,708.99 = 6,936.76 : x
  2. Step 2: Convert to fraction form
    12,480.94/18,708.99 = 6,936.76/x
  3. Step 3: Cross multiply
    12,480.94x = 18,708.99 × 6,936.76
  4. Step 4: Simplify right side
    12,480.94x = 129,779,773.47
  5. Step 5: Solve for x
    x = 129,779,773.47/12,480.94
  6. Step 6: Final answer
    x = 10,398.24

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