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Finding the Fourth Proportional to 1,194.14, 1,789.36 and 731.23

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Solution

The fourth proportional to 1,194.14, 1,789.36 and 731.23 is: 1,095.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,194.14 : 1,789.36 = 731.23 : x
  2. Step 2: Convert to fraction form
    1,194.14/1,789.36 = 731.23/x
  3. Step 3: Cross multiply
    1,194.14x = 1,789.36 × 731.23
  4. Step 4: Simplify right side
    1,194.14x = 1,308,427.41
  5. Step 5: Solve for x
    x = 1,308,427.41/1,194.14
  6. Step 6: Final answer
    x = 1,095.70

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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.