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Finding the Fourth Proportional to 98,432.40, 147,429.90 and 80,936.40

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Solution

The fourth proportional to 98,432.40, 147,429.90 and 80,936.40 is: 121,224.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,432.40 : 147,429.90 = 80,936.40 : x
  2. Step 2: Convert to fraction form
    98,432.40/147,429.90 = 80,936.40/x
  3. Step 3: Cross multiply
    98,432.40x = 147,429.90 × 80,936.40
  4. Step 4: Simplify right side
    98,432.40x = 11,932,445,358.36
  5. Step 5: Solve for x
    x = 11,932,445,358.36/98,432.40
  6. Step 6: Final answer
    x = 121,224.77

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