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Finding the Fourth Proportional to 118,752.63, 178,194.56 and 66,191.73

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Solution

The fourth proportional to 118,752.63, 178,194.56 and 66,191.73 is: 99,324.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,752.63 : 178,194.56 = 66,191.73 : x
  2. Step 2: Convert to fraction form
    118,752.63/178,194.56 = 66,191.73/x
  3. Step 3: Cross multiply
    118,752.63x = 178,194.56 × 66,191.73
  4. Step 4: Simplify right side
    118,752.63x = 11,795,005,872.03
  5. Step 5: Solve for x
    x = 11,795,005,872.03/118,752.63
  6. Step 6: Final answer
    x = 99,324.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.