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Finding the Fourth Proportional to 791.68, 1,092.36 and 460.04

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Solution

The fourth proportional to 791.68, 1,092.36 and 460.04 is: 634.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    791.68 : 1,092.36 = 460.04 : x
  2. Step 2: Convert to fraction form
    791.68/1,092.36 = 460.04/x
  3. Step 3: Cross multiply
    791.68x = 1,092.36 × 460.04
  4. Step 4: Simplify right side
    791.68x = 502,529.29
  5. Step 5: Solve for x
    x = 502,529.29/791.68
  6. Step 6: Final answer
    x = 634.76

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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.