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Finding the Fourth Proportional to 61,578.96, 84,959.64 and 37,680.72

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Solution

The fourth proportional to 61,578.96, 84,959.64 and 37,680.72 is: 51,987.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,578.96 : 84,959.64 = 37,680.72 : x
  2. Step 2: Convert to fraction form
    61,578.96/84,959.64 = 37,680.72/x
  3. Step 3: Cross multiply
    61,578.96x = 84,959.64 × 37,680.72
  4. Step 4: Simplify right side
    61,578.96x = 3,201,340,406.14
  5. Step 5: Solve for x
    x = 3,201,340,406.14/61,578.96
  6. Step 6: Final answer
    x = 51,987.57

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