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Finding the Fourth Proportional to 906.69, 1,251.27 and 574.86

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Solution

The fourth proportional to 906.69, 1,251.27 and 574.86 is: 793.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    906.69 : 1,251.27 = 574.86 : x
  2. Step 2: Convert to fraction form
    906.69/1,251.27 = 574.86/x
  3. Step 3: Cross multiply
    906.69x = 1,251.27 × 574.86
  4. Step 4: Simplify right side
    906.69x = 719,305.07
  5. Step 5: Solve for x
    x = 719,305.07/906.69
  6. Step 6: Final answer
    x = 793.33

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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.