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Finding the Fourth Proportional to 893.11, 1,233.17 and 696.28

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Solution

The fourth proportional to 893.11, 1,233.17 and 696.28 is: 961.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.11 : 1,233.17 = 696.28 : x
  2. Step 2: Convert to fraction form
    893.11/1,233.17 = 696.28/x
  3. Step 3: Cross multiply
    893.11x = 1,233.17 × 696.28
  4. Step 4: Simplify right side
    893.11x = 858,630.27
  5. Step 5: Solve for x
    x = 858,630.27/893.11
  6. Step 6: Final answer
    x = 961.40

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1.5x scale

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.