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Finding the Fourth Proportional to 1,182.67, 1,631.49 and 833.56

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Solution

The fourth proportional to 1,182.67, 1,631.49 and 833.56 is: 1,149.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,182.67 : 1,631.49 = 833.56 : x
  2. Step 2: Convert to fraction form
    1,182.67/1,631.49 = 833.56/x
  3. Step 3: Cross multiply
    1,182.67x = 1,631.49 × 833.56
  4. Step 4: Simplify right side
    1,182.67x = 1,359,944.80
  5. Step 5: Solve for x
    x = 1,359,944.80/1,182.67
  6. Step 6: Final answer
    x = 1,149.89

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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.