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Finding the Fourth Proportional to 114,715.80, 172,073.70 and 91,096.20

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Solution

The fourth proportional to 114,715.80, 172,073.70 and 91,096.20 is: 136,644.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,715.80 : 172,073.70 = 91,096.20 : x
  2. Step 2: Convert to fraction form
    114,715.80/172,073.70 = 91,096.20/x
  3. Step 3: Cross multiply
    114,715.80x = 172,073.70 × 91,096.20
  4. Step 4: Simplify right side
    114,715.80x = 15,675,260,189.94
  5. Step 5: Solve for x
    x = 15,675,260,189.94/114,715.80
  6. Step 6: Final answer
    x = 136,644.30

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