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Finding the Fourth Proportional to 30,983.81, 46,449.83 and 14,355.78

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Solution

The fourth proportional to 30,983.81, 46,449.83 and 14,355.78 is: 21,521.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,983.81 : 46,449.83 = 14,355.78 : x
  2. Step 2: Convert to fraction form
    30,983.81/46,449.83 = 14,355.78/x
  3. Step 3: Cross multiply
    30,983.81x = 46,449.83 × 14,355.78
  4. Step 4: Simplify right side
    30,983.81x = 666,823,329.18
  5. Step 5: Solve for x
    x = 666,823,329.18/30,983.81
  6. Step 6: Final answer
    x = 21,521.67

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