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Finding the Fourth Proportional to 791.74, 1,187.61 and 466.88

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Solution

The fourth proportional to 791.74, 1,187.61 and 466.88 is: 700.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    791.74 : 1,187.61 = 466.88 : x
  2. Step 2: Convert to fraction form
    791.74/1,187.61 = 466.88/x
  3. Step 3: Cross multiply
    791.74x = 1,187.61 × 466.88
  4. Step 4: Simplify right side
    791.74x = 554,463.67
  5. Step 5: Solve for x
    x = 554,463.67/791.74
  6. Step 6: Final answer
    x = 700.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.