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Finding the Fourth Proportional to 42,640.40, 63,960.60 and 33,731.60

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Solution

The fourth proportional to 42,640.40, 63,960.60 and 33,731.60 is: 50,597.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,640.40 : 63,960.60 = 33,731.60 : x
  2. Step 2: Convert to fraction form
    42,640.40/63,960.60 = 33,731.60/x
  3. Step 3: Cross multiply
    42,640.40x = 63,960.60 × 33,731.60
  4. Step 4: Simplify right side
    42,640.40x = 2,157,493,374.96
  5. Step 5: Solve for x
    x = 2,157,493,374.96/42,640.40
  6. Step 6: Final answer
    x = 50,597.40

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