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Finding the Fourth Proportional to 1,183.72, 1,775.94 and 696.46

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Solution

The fourth proportional to 1,183.72, 1,775.94 and 696.46 is: 1,044.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,183.72 : 1,775.94 = 696.46 : x
  2. Step 2: Convert to fraction form
    1,183.72/1,775.94 = 696.46/x
  3. Step 3: Cross multiply
    1,183.72x = 1,775.94 × 696.46
  4. Step 4: Simplify right side
    1,183.72x = 1,236,871.17
  5. Step 5: Solve for x
    x = 1,236,871.17/1,183.72
  6. Step 6: Final answer
    x = 1,044.90

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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.