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Finding the Fourth Proportional to 53,486.80, 80,230.20 and 52,709.20

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Solution

The fourth proportional to 53,486.80, 80,230.20 and 52,709.20 is: 79,063.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,486.80 : 80,230.20 = 52,709.20 : x
  2. Step 2: Convert to fraction form
    53,486.80/80,230.20 = 52,709.20/x
  3. Step 3: Cross multiply
    53,486.80x = 80,230.20 × 52,709.20
  4. Step 4: Simplify right side
    53,486.80x = 4,228,869,657.84
  5. Step 5: Solve for x
    x = 4,228,869,657.84/53,486.80
  6. Step 6: Final answer
    x = 79,063.80

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