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Finding the Fourth Proportional to 399,177.24, 550,877.93 and 217,899.91

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Solution

The fourth proportional to 399,177.24, 550,877.93 and 217,899.91 is: 300,709.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,177.24 : 550,877.93 = 217,899.91 : x
  2. Step 2: Convert to fraction form
    399,177.24/550,877.93 = 217,899.91/x
  3. Step 3: Cross multiply
    399,177.24x = 550,877.93 × 217,899.91
  4. Step 4: Simplify right side
    399,177.24x = 120,036,251,367.99
  5. Step 5: Solve for x
    x = 120,036,251,367.99/399,177.24
  6. Step 6: Final answer
    x = 300,709.16

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