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Finding the Fourth Proportional to 76,634.28, 105,751.50 and 42,644.76

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Solution

The fourth proportional to 76,634.28, 105,751.50 and 42,644.76 is: 58,847.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,634.28 : 105,751.50 = 42,644.76 : x
  2. Step 2: Convert to fraction form
    76,634.28/105,751.50 = 42,644.76/x
  3. Step 3: Cross multiply
    76,634.28x = 105,751.50 × 42,644.76
  4. Step 4: Simplify right side
    76,634.28x = 4,509,747,337.14
  5. Step 5: Solve for x
    x = 4,509,747,337.14/76,634.28
  6. Step 6: Final answer
    x = 58,847.65

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