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Finding the Fourth Proportional to 268,091.60, 402,137.40 and 162,942.80

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Solution

The fourth proportional to 268,091.60, 402,137.40 and 162,942.80 is: 244,414.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,091.60 : 402,137.40 = 162,942.80 : x
  2. Step 2: Convert to fraction form
    268,091.60/402,137.40 = 162,942.80/x
  3. Step 3: Cross multiply
    268,091.60x = 402,137.40 × 162,942.80
  4. Step 4: Simplify right side
    268,091.60x = 65,525,393,940.72
  5. Step 5: Solve for x
    x = 65,525,393,940.72/268,091.60
  6. Step 6: Final answer
    x = 244,414.20

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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.