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Finding the Fourth Proportional to 31,311.84, 46,988.12 and 13,559.84

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Solution

The fourth proportional to 31,311.84, 46,988.12 and 13,559.84 is: 20,348.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,311.84 : 46,988.12 = 13,559.84 : x
  2. Step 2: Convert to fraction form
    31,311.84/46,988.12 = 13,559.84/x
  3. Step 3: Cross multiply
    31,311.84x = 46,988.12 × 13,559.84
  4. Step 4: Simplify right side
    31,311.84x = 637,151,086.36
  5. Step 5: Solve for x
    x = 637,151,086.36/31,311.84
  6. Step 6: Final answer
    x = 20,348.57

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