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Finding the Fourth Proportional to 976.92, 1,348.16 and 584.14

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Solution

The fourth proportional to 976.92, 1,348.16 and 584.14 is: 806.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    976.92 : 1,348.16 = 584.14 : x
  2. Step 2: Convert to fraction form
    976.92/1,348.16 = 584.14/x
  3. Step 3: Cross multiply
    976.92x = 1,348.16 × 584.14
  4. Step 4: Simplify right side
    976.92x = 787,514.18
  5. Step 5: Solve for x
    x = 787,514.18/976.92
  6. Step 6: Final answer
    x = 806.12

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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.