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Finding the Fourth Proportional to 449,176.40, 673,764.60 and 212,980.40

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Solution

The fourth proportional to 449,176.40, 673,764.60 and 212,980.40 is: 319,470.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,176.40 : 673,764.60 = 212,980.40 : x
  2. Step 2: Convert to fraction form
    449,176.40/673,764.60 = 212,980.40/x
  3. Step 3: Cross multiply
    449,176.40x = 673,764.60 × 212,980.40
  4. Step 4: Simplify right side
    449,176.40x = 143,498,654,013.84
  5. Step 5: Solve for x
    x = 143,498,654,013.84/449,176.40
  6. Step 6: Final answer
    x = 319,470.60

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