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Finding the Fourth Proportional to 115,576.60, 172,980.90 and 83,896.60

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Solution

The fourth proportional to 115,576.60, 172,980.90 and 83,896.60 is: 125,566.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,576.60 : 172,980.90 = 83,896.60 : x
  2. Step 2: Convert to fraction form
    115,576.60/172,980.90 = 83,896.60/x
  3. Step 3: Cross multiply
    115,576.60x = 172,980.90 × 83,896.60
  4. Step 4: Simplify right side
    115,576.60x = 14,512,509,374.94
  5. Step 5: Solve for x
    x = 14,512,509,374.94/115,576.60
  6. Step 6: Final answer
    x = 125,566.16

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