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Finding the Fourth Proportional to 1,452.92, 2,005.28 and 823.46

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Solution

The fourth proportional to 1,452.92, 2,005.28 and 823.46 is: 1,136.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,452.92 : 2,005.28 = 823.46 : x
  2. Step 2: Convert to fraction form
    1,452.92/2,005.28 = 823.46/x
  3. Step 3: Cross multiply
    1,452.92x = 2,005.28 × 823.46
  4. Step 4: Simplify right side
    1,452.92x = 1,651,253.73
  5. Step 5: Solve for x
    x = 1,651,253.73/1,452.92
  6. Step 6: Final answer
    x = 1,136.51

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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.