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Finding the Fourth Proportional to 2,166.77, 3,247.43 and 932.94

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Solution

The fourth proportional to 2,166.77, 3,247.43 and 932.94 is: 1,398.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.77 : 3,247.43 = 932.94 : x
  2. Step 2: Convert to fraction form
    2,166.77/3,247.43 = 932.94/x
  3. Step 3: Cross multiply
    2,166.77x = 3,247.43 × 932.94
  4. Step 4: Simplify right side
    2,166.77x = 3,029,652.68
  5. Step 5: Solve for x
    x = 3,029,652.68/2,166.77
  6. Step 6: Final answer
    x = 1,398.23

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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.