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Finding the Fourth Proportional to 1,196.38, 1,651.02 and 672.41

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Solution

The fourth proportional to 1,196.38, 1,651.02 and 672.41 is: 927.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,196.38 : 1,651.02 = 672.41 : x
  2. Step 2: Convert to fraction form
    1,196.38/1,651.02 = 672.41/x
  3. Step 3: Cross multiply
    1,196.38x = 1,651.02 × 672.41
  4. Step 4: Simplify right side
    1,196.38x = 1,110,162.36
  5. Step 5: Solve for x
    x = 1,110,162.36/1,196.38
  6. Step 6: Final answer
    x = 927.93

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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.