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Finding the Fourth Proportional to 56,576.25, 78,077.67 and 31,425.75

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Solution

The fourth proportional to 56,576.25, 78,077.67 and 31,425.75 is: 43,368.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,576.25 : 78,077.67 = 31,425.75 : x
  2. Step 2: Convert to fraction form
    56,576.25/78,077.67 = 31,425.75/x
  3. Step 3: Cross multiply
    56,576.25x = 78,077.67 × 31,425.75
  4. Step 4: Simplify right side
    56,576.25x = 2,453,649,338.00
  5. Step 5: Solve for x
    x = 2,453,649,338.00/56,576.25
  6. Step 6: Final answer
    x = 43,368.89

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