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Finding the Fourth Proportional to 934.24, 1,396.48 and 658.48

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Solution

The fourth proportional to 934.24, 1,396.48 and 658.48 is: 984.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.24 : 1,396.48 = 658.48 : x
  2. Step 2: Convert to fraction form
    934.24/1,396.48 = 658.48/x
  3. Step 3: Cross multiply
    934.24x = 1,396.48 × 658.48
  4. Step 4: Simplify right side
    934.24x = 919,554.15
  5. Step 5: Solve for x
    x = 919,554.15/934.24
  6. Step 6: Final answer
    x = 984.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.