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Finding the Fourth Proportional to 386,998.20, 580,302.90 and 176,398.20

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Solution

The fourth proportional to 386,998.20, 580,302.90 and 176,398.20 is: 264,508.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,998.20 : 580,302.90 = 176,398.20 : x
  2. Step 2: Convert to fraction form
    386,998.20/580,302.90 = 176,398.20/x
  3. Step 3: Cross multiply
    386,998.20x = 580,302.90 × 176,398.20
  4. Step 4: Simplify right side
    386,998.20x = 102,364,387,014.78
  5. Step 5: Solve for x
    x = 102,364,387,014.78/386,998.20
  6. Step 6: Final answer
    x = 264,508.69

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