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Finding the Fourth Proportional to 338,596.80, 509,066.40 and 316,670.40

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Solution

The fourth proportional to 338,596.80, 509,066.40 and 316,670.40 is: 476,100.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,596.80 : 509,066.40 = 316,670.40 : x
  2. Step 2: Convert to fraction form
    338,596.80/509,066.40 = 316,670.40/x
  3. Step 3: Cross multiply
    338,596.80x = 509,066.40 × 316,670.40
  4. Step 4: Simplify right side
    338,596.80x = 161,206,260,514.56
  5. Step 5: Solve for x
    x = 161,206,260,514.56/338,596.80
  6. Step 6: Final answer
    x = 476,100.96

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