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Finding the Fourth Proportional to 311,913.45, 467,870.18 and 171,945.45

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Solution

The fourth proportional to 311,913.45, 467,870.18 and 171,945.45 is: 257,918.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,913.45 : 467,870.18 = 171,945.45 : x
  2. Step 2: Convert to fraction form
    311,913.45/467,870.18 = 171,945.45/x
  3. Step 3: Cross multiply
    311,913.45x = 467,870.18 × 171,945.45
  4. Step 4: Simplify right side
    311,913.45x = 80,448,147,781.95
  5. Step 5: Solve for x
    x = 80,448,147,781.95/311,913.45
  6. Step 6: Final answer
    x = 257,918.18

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