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Finding the Fourth Proportional to 99,671.97, 149,507.96 and 68,412.45

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Solution

The fourth proportional to 99,671.97, 149,507.96 and 68,412.45 is: 102,618.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,671.97 : 149,507.96 = 68,412.45 : x
  2. Step 2: Convert to fraction form
    99,671.97/149,507.96 = 68,412.45/x
  3. Step 3: Cross multiply
    99,671.97x = 149,507.96 × 68,412.45
  4. Step 4: Simplify right side
    99,671.97x = 10,228,205,496.04
  5. Step 5: Solve for x
    x = 10,228,205,496.04/99,671.97
  6. Step 6: Final answer
    x = 102,618.68

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