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Finding the Fourth Proportional to 2,671.97, 4,007.96 and 724.32

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Solution

The fourth proportional to 2,671.97, 4,007.96 and 724.32 is: 1,086.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,671.97 : 4,007.96 = 724.32 : x
  2. Step 2: Convert to fraction form
    2,671.97/4,007.96 = 724.32/x
  3. Step 3: Cross multiply
    2,671.97x = 4,007.96 × 724.32
  4. Step 4: Simplify right side
    2,671.97x = 2,903,041.97
  5. Step 5: Solve for x
    x = 2,903,041.97/2,671.97
  6. Step 6: Final answer
    x = 1,086.48

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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.