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Finding the Fourth Proportional to 326,869.76, 489,861.72 and 169,208.90

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Solution

The fourth proportional to 326,869.76, 489,861.72 and 169,208.90 is: 253,584.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,869.76 : 489,861.72 = 169,208.90 : x
  2. Step 2: Convert to fraction form
    326,869.76/489,861.72 = 169,208.90/x
  3. Step 3: Cross multiply
    326,869.76x = 489,861.72 × 169,208.90
  4. Step 4: Simplify right side
    326,869.76x = 82,888,962,793.31
  5. Step 5: Solve for x
    x = 82,888,962,793.31/326,869.76
  6. Step 6: Final answer
    x = 253,584.07

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