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Finding the Fourth Proportional to 220,755.14, 331,101.60 and 70,976.40

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Solution

The fourth proportional to 220,755.14, 331,101.60 and 70,976.40 is: 106,454.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,755.14 : 331,101.60 = 70,976.40 : x
  2. Step 2: Convert to fraction form
    220,755.14/331,101.60 = 70,976.40/x
  3. Step 3: Cross multiply
    220,755.14x = 331,101.60 × 70,976.40
  4. Step 4: Simplify right side
    220,755.14x = 23,500,399,602.24
  5. Step 5: Solve for x
    x = 23,500,399,602.24/220,755.14
  6. Step 6: Final answer
    x = 106,454.60

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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.