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Finding the Fourth Proportional to 98,999.96, 136,621.71 and 53,679.47

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Solution

The fourth proportional to 98,999.96, 136,621.71 and 53,679.47 is: 74,078.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,999.96 : 136,621.71 = 53,679.47 : x
  2. Step 2: Convert to fraction form
    98,999.96/136,621.71 = 53,679.47/x
  3. Step 3: Cross multiply
    98,999.96x = 136,621.71 × 53,679.47
  4. Step 4: Simplify right side
    98,999.96x = 7,333,780,300.19
  5. Step 5: Solve for x
    x = 7,333,780,300.19/98,999.96
  6. Step 6: Final answer
    x = 74,078.62

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