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Finding the Fourth Proportional to 55,139.80, 82,709.70 and 46,586.20

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Solution

The fourth proportional to 55,139.80, 82,709.70 and 46,586.20 is: 69,879.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,139.80 : 82,709.70 = 46,586.20 : x
  2. Step 2: Convert to fraction form
    55,139.80/82,709.70 = 46,586.20/x
  3. Step 3: Cross multiply
    55,139.80x = 82,709.70 × 46,586.20
  4. Step 4: Simplify right side
    55,139.80x = 3,853,130,626.14
  5. Step 5: Solve for x
    x = 3,853,130,626.14/55,139.80
  6. Step 6: Final answer
    x = 69,879.30

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