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Finding the Fourth Proportional to 3,093.76, 4,640.58 and 785.26

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Solution

The fourth proportional to 3,093.76, 4,640.58 and 785.26 is: 1,177.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,093.76 : 4,640.58 = 785.26 : x
  2. Step 2: Convert to fraction form
    3,093.76/4,640.58 = 785.26/x
  3. Step 3: Cross multiply
    3,093.76x = 4,640.58 × 785.26
  4. Step 4: Simplify right side
    3,093.76x = 3,644,061.85
  5. Step 5: Solve for x
    x = 3,644,061.85/3,093.76
  6. Step 6: Final answer
    x = 1,177.87

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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.