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Finding the Fourth Proportional to 118,912.44, 178,387.04 and 40,020.48

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Solution

The fourth proportional to 118,912.44, 178,387.04 and 40,020.48 is: 60,036.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,912.44 : 178,387.04 = 40,020.48 : x
  2. Step 2: Convert to fraction form
    118,912.44/178,387.04 = 40,020.48/x
  3. Step 3: Cross multiply
    118,912.44x = 178,387.04 × 40,020.48
  4. Step 4: Simplify right side
    118,912.44x = 7,139,134,966.58
  5. Step 5: Solve for x
    x = 7,139,134,966.58/118,912.44
  6. Step 6: Final answer
    x = 60,036.91

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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.