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Finding the Fourth Proportional to 170,932.20, 255,900 and 99,636.72

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Solution

The fourth proportional to 170,932.20, 255,900 and 99,636.72 is: 149,164.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,932.20 : 255,900 = 99,636.72 : x
  2. Step 2: Convert to fraction form
    170,932.20/255,900 = 99,636.72/x
  3. Step 3: Cross multiply
    170,932.20x = 255,900 × 99,636.72
  4. Step 4: Simplify right side
    170,932.20x = 25,497,036,648
  5. Step 5: Solve for x
    x = 25,497,036,648/170,932.20
  6. Step 6: Final answer
    x = 149,164.62

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