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Finding the Fourth Proportional to 92,308.20, 138,451.32 and 29,978.64

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Solution

The fourth proportional to 92,308.20, 138,451.32 and 29,978.64 is: 44,964.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,308.20 : 138,451.32 = 29,978.64 : x
  2. Step 2: Convert to fraction form
    92,308.20/138,451.32 = 29,978.64/x
  3. Step 3: Cross multiply
    92,308.20x = 138,451.32 × 29,978.64
  4. Step 4: Simplify right side
    92,308.20x = 4,150,582,279.80
  5. Step 5: Solve for x
    x = 4,150,582,279.80/92,308.20
  6. Step 6: Final answer
    x = 44,964.39

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