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Finding the Fourth Proportional to 99,187.61, 136,878.48 and 53,865.28

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Solution

The fourth proportional to 99,187.61, 136,878.48 and 53,865.28 is: 74,333.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,187.61 : 136,878.48 = 53,865.28 : x
  2. Step 2: Convert to fraction form
    99,187.61/136,878.48 = 53,865.28/x
  3. Step 3: Cross multiply
    99,187.61x = 136,878.48 × 53,865.28
  4. Step 4: Simplify right side
    99,187.61x = 7,372,997,651.17
  5. Step 5: Solve for x
    x = 7,372,997,651.17/99,187.61
  6. Step 6: Final answer
    x = 74,333.86

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