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Finding the Fourth Proportional to 20,710.32, 31,066.51 and 5,921.42

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Solution

The fourth proportional to 20,710.32, 31,066.51 and 5,921.42 is: 8,882.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.32 : 31,066.51 = 5,921.42 : x
  2. Step 2: Convert to fraction form
    20,710.32/31,066.51 = 5,921.42/x
  3. Step 3: Cross multiply
    20,710.32x = 31,066.51 × 5,921.42
  4. Step 4: Simplify right side
    20,710.32x = 183,957,668.70
  5. Step 5: Solve for x
    x = 183,957,668.70/20,710.32
  6. Step 6: Final answer
    x = 8,882.42

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