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Finding the Fourth Proportional to 431,310.30, 646,965.45 and 115,799.10

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Solution

The fourth proportional to 431,310.30, 646,965.45 and 115,799.10 is: 173,698.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,310.30 : 646,965.45 = 115,799.10 : x
  2. Step 2: Convert to fraction form
    431,310.30/646,965.45 = 115,799.10/x
  3. Step 3: Cross multiply
    431,310.30x = 646,965.45 × 115,799.10
  4. Step 4: Simplify right side
    431,310.30x = 74,918,016,841.10
  5. Step 5: Solve for x
    x = 74,918,016,841.10/431,310.30
  6. Step 6: Final answer
    x = 173,698.65

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