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Finding the Fourth Proportional to 1,318,860.80, 1,978,324.68 and 359,324.11

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Solution

The fourth proportional to 1,318,860.80, 1,978,324.68 and 359,324.11 is: 538,995.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,860.80 : 1,978,324.68 = 359,324.11 : x
  2. Step 2: Convert to fraction form
    1,318,860.80/1,978,324.68 = 359,324.11/x
  3. Step 3: Cross multiply
    1,318,860.80x = 1,978,324.68 × 359,324.11
  4. Step 4: Simplify right side
    1,318,860.80x = 710,859,754,932.04
  5. Step 5: Solve for x
    x = 710,859,754,932.04/1,318,860.80
  6. Step 6: Final answer
    x = 538,995.29

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