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Finding the Fourth Proportional to 2,358.22, 3,536.49 and 691.88

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Solution

The fourth proportional to 2,358.22, 3,536.49 and 691.88 is: 1,037.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,358.22 : 3,536.49 = 691.88 : x
  2. Step 2: Convert to fraction form
    2,358.22/3,536.49 = 691.88/x
  3. Step 3: Cross multiply
    2,358.22x = 3,536.49 × 691.88
  4. Step 4: Simplify right side
    2,358.22x = 2,446,805.56
  5. Step 5: Solve for x
    x = 2,446,805.56/2,358.22
  6. Step 6: Final answer
    x = 1,037.57

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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.