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Finding the Fourth Proportional to 431,129.76, 646,772.40 and 194,583.84

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Solution

The fourth proportional to 431,129.76, 646,772.40 and 194,583.84 is: 291,910.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,129.76 : 646,772.40 = 194,583.84 : x
  2. Step 2: Convert to fraction form
    431,129.76/646,772.40 = 194,583.84/x
  3. Step 3: Cross multiply
    431,129.76x = 646,772.40 × 194,583.84
  4. Step 4: Simplify right side
    431,129.76x = 125,851,457,198.02
  5. Step 5: Solve for x
    x = 125,851,457,198.02/431,129.76
  6. Step 6: Final answer
    x = 291,910.86

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