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Finding the Fourth Proportional to 446,429.80, 669,644.70 and 412,215.40

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Solution

The fourth proportional to 446,429.80, 669,644.70 and 412,215.40 is: 618,323.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,429.80 : 669,644.70 = 412,215.40 : x
  2. Step 2: Convert to fraction form
    446,429.80/669,644.70 = 412,215.40/x
  3. Step 3: Cross multiply
    446,429.80x = 669,644.70 × 412,215.40
  4. Step 4: Simplify right side
    446,429.80x = 276,037,857,868.38
  5. Step 5: Solve for x
    x = 276,037,857,868.38/446,429.80
  6. Step 6: Final answer
    x = 618,323.10

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