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Finding the Fourth Proportional to 68,948.55, 103,327.14 and 31,416.90

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Solution

The fourth proportional to 68,948.55, 103,327.14 and 31,416.90 is: 47,081.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,948.55 : 103,327.14 = 31,416.90 : x
  2. Step 2: Convert to fraction form
    68,948.55/103,327.14 = 31,416.90/x
  3. Step 3: Cross multiply
    68,948.55x = 103,327.14 × 31,416.90
  4. Step 4: Simplify right side
    68,948.55x = 3,246,218,424.67
  5. Step 5: Solve for x
    x = 3,246,218,424.67/68,948.55
  6. Step 6: Final answer
    x = 47,081.75

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