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Finding the Fourth Proportional to 117,658.62, 162,308.07 and 72,868.86

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Solution

The fourth proportional to 117,658.62, 162,308.07 and 72,868.86 is: 100,521.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,658.62 : 162,308.07 = 72,868.86 : x
  2. Step 2: Convert to fraction form
    117,658.62/162,308.07 = 72,868.86/x
  3. Step 3: Cross multiply
    117,658.62x = 162,308.07 × 72,868.86
  4. Step 4: Simplify right side
    117,658.62x = 11,827,204,029.70
  5. Step 5: Solve for x
    x = 11,827,204,029.70/117,658.62
  6. Step 6: Final answer
    x = 100,521.36

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