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Finding the Fourth Proportional to 312,442.72, 431,168.70 and 169,199.44

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Solution

The fourth proportional to 312,442.72, 431,168.70 and 169,199.44 is: 233,494.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,442.72 : 431,168.70 = 169,199.44 : x
  2. Step 2: Convert to fraction form
    312,442.72/431,168.70 = 169,199.44/x
  3. Step 3: Cross multiply
    312,442.72x = 431,168.70 × 169,199.44
  4. Step 4: Simplify right side
    312,442.72x = 72,953,502,585.53
  5. Step 5: Solve for x
    x = 72,953,502,585.53/312,442.72
  6. Step 6: Final answer
    x = 233,494.01

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