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Finding the Fourth Proportional to 968.06, 1,336.13 and 548.44

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Solution

The fourth proportional to 968.06, 1,336.13 and 548.44 is: 756.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.06 : 1,336.13 = 548.44 : x
  2. Step 2: Convert to fraction form
    968.06/1,336.13 = 548.44/x
  3. Step 3: Cross multiply
    968.06x = 1,336.13 × 548.44
  4. Step 4: Simplify right side
    968.06x = 732,781.05
  5. Step 5: Solve for x
    x = 732,781.05/968.06
  6. Step 6: Final answer
    x = 756.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.