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Finding the Fourth Proportional to 1,186.26, 1,779.75 and 797.82

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Solution

The fourth proportional to 1,186.26, 1,779.75 and 797.82 is: 1,196.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186.26 : 1,779.75 = 797.82 : x
  2. Step 2: Convert to fraction form
    1,186.26/1,779.75 = 797.82/x
  3. Step 3: Cross multiply
    1,186.26x = 1,779.75 × 797.82
  4. Step 4: Simplify right side
    1,186.26x = 1,419,920.15
  5. Step 5: Solve for x
    x = 1,419,920.15/1,186.26
  6. Step 6: Final answer
    x = 1,196.97

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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.