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Finding the Fourth Proportional to 101,725.53, 140,379.78 and 56,403.60

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Solution

The fourth proportional to 101,725.53, 140,379.78 and 56,403.60 is: 77,836.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,725.53 : 140,379.78 = 56,403.60 : x
  2. Step 2: Convert to fraction form
    101,725.53/140,379.78 = 56,403.60/x
  3. Step 3: Cross multiply
    101,725.53x = 140,379.78 × 56,403.60
  4. Step 4: Simplify right side
    101,725.53x = 7,917,924,959.21
  5. Step 5: Solve for x
    x = 7,917,924,959.21/101,725.53
  6. Step 6: Final answer
    x = 77,836.16

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