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Finding the Fourth Proportional to 56,363.58, 77,780.78 and 31,212.54

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Solution

The fourth proportional to 56,363.58, 77,780.78 and 31,212.54 is: 43,072.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,363.58 : 77,780.78 = 31,212.54 : x
  2. Step 2: Convert to fraction form
    56,363.58/77,780.78 = 31,212.54/x
  3. Step 3: Cross multiply
    56,363.58x = 77,780.78 × 31,212.54
  4. Step 4: Simplify right side
    56,363.58x = 2,427,735,706.98
  5. Step 5: Solve for x
    x = 2,427,735,706.98/56,363.58
  6. Step 6: Final answer
    x = 43,072.77

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