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Finding the Fourth Proportional to 118,225.20, 176,905.80 and 87,121.20

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Solution

The fourth proportional to 118,225.20, 176,905.80 and 87,121.20 is: 130,363.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,225.20 : 176,905.80 = 87,121.20 : x
  2. Step 2: Convert to fraction form
    118,225.20/176,905.80 = 87,121.20/x
  3. Step 3: Cross multiply
    118,225.20x = 176,905.80 × 87,121.20
  4. Step 4: Simplify right side
    118,225.20x = 15,412,245,582.96
  5. Step 5: Solve for x
    x = 15,412,245,582.96/118,225.20
  6. Step 6: Final answer
    x = 130,363.46

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