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Finding the Fourth Proportional to 20,710.51, 28,579.53 and 11,756.83

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Solution

The fourth proportional to 20,710.51, 28,579.53 and 11,756.83 is: 16,223.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.51 : 28,579.53 = 11,756.83 : x
  2. Step 2: Convert to fraction form
    20,710.51/28,579.53 = 11,756.83/x
  3. Step 3: Cross multiply
    20,710.51x = 28,579.53 × 11,756.83
  4. Step 4: Simplify right side
    20,710.51x = 336,004,675.69
  5. Step 5: Solve for x
    x = 336,004,675.69/20,710.51
  6. Step 6: Final answer
    x = 16,223.87

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