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Finding the Fourth Proportional to 2,082.33, 3,123.99 and 695.68

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Solution

The fourth proportional to 2,082.33, 3,123.99 and 695.68 is: 1,043.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.33 : 3,123.99 = 695.68 : x
  2. Step 2: Convert to fraction form
    2,082.33/3,123.99 = 695.68/x
  3. Step 3: Cross multiply
    2,082.33x = 3,123.99 × 695.68
  4. Step 4: Simplify right side
    2,082.33x = 2,173,297.36
  5. Step 5: Solve for x
    x = 2,173,297.36/2,082.33
  6. Step 6: Final answer
    x = 1,043.69

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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.