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Finding the Fourth Proportional to 1,694.52, 2,338.80 and 996.12

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Solution

The fourth proportional to 1,694.52, 2,338.80 and 996.12 is: 1,374.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,694.52 : 2,338.80 = 996.12 : x
  2. Step 2: Convert to fraction form
    1,694.52/2,338.80 = 996.12/x
  3. Step 3: Cross multiply
    1,694.52x = 2,338.80 × 996.12
  4. Step 4: Simplify right side
    1,694.52x = 2,329,725.46
  5. Step 5: Solve for x
    x = 2,329,725.46/1,694.52
  6. Step 6: Final answer
    x = 1,374.86

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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.