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Finding the Fourth Proportional to 170,716.70, 256,075.05 and 81,948.80

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Solution

The fourth proportional to 170,716.70, 256,075.05 and 81,948.80 is: 122,923.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,716.70 : 256,075.05 = 81,948.80 : x
  2. Step 2: Convert to fraction form
    170,716.70/256,075.05 = 81,948.80/x
  3. Step 3: Cross multiply
    170,716.70x = 256,075.05 × 81,948.80
  4. Step 4: Simplify right side
    170,716.70x = 20,985,043,057.44
  5. Step 5: Solve for x
    x = 20,985,043,057.44/170,716.70
  6. Step 6: Final answer
    x = 122,923.20

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