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Finding the Fourth Proportional to 962.72, 1,327.20 and 755.36

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Solution

The fourth proportional to 962.72, 1,327.20 and 755.36 is: 1,041.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.72 : 1,327.20 = 755.36 : x
  2. Step 2: Convert to fraction form
    962.72/1,327.20 = 755.36/x
  3. Step 3: Cross multiply
    962.72x = 1,327.20 × 755.36
  4. Step 4: Simplify right side
    962.72x = 1,002,513.79
  5. Step 5: Solve for x
    x = 1,002,513.79/962.72
  6. Step 6: Final answer
    x = 1,041.33

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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.