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Finding the Fourth Proportional to 1,166.74, 1,609.21 and 793.09

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Solution

The fourth proportional to 1,166.74, 1,609.21 and 793.09 is: 1,093.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,166.74 : 1,609.21 = 793.09 : x
  2. Step 2: Convert to fraction form
    1,166.74/1,609.21 = 793.09/x
  3. Step 3: Cross multiply
    1,166.74x = 1,609.21 × 793.09
  4. Step 4: Simplify right side
    1,166.74x = 1,276,250.34
  5. Step 5: Solve for x
    x = 1,276,250.34/1,166.74
  6. Step 6: Final answer
    x = 1,093.86

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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.