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Finding the Fourth Proportional to 97,716.80, 146,575.20 and 86,043.20

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Solution

The fourth proportional to 97,716.80, 146,575.20 and 86,043.20 is: 129,064.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,716.80 : 146,575.20 = 86,043.20 : x
  2. Step 2: Convert to fraction form
    97,716.80/146,575.20 = 86,043.20/x
  3. Step 3: Cross multiply
    97,716.80x = 146,575.20 × 86,043.20
  4. Step 4: Simplify right side
    97,716.80x = 12,611,799,248.64
  5. Step 5: Solve for x
    x = 12,611,799,248.64/97,716.80
  6. Step 6: Final answer
    x = 129,064.80

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