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Finding the Fourth Proportional to 1,265.49, 1,745.91 and 793.26

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Solution

The fourth proportional to 1,265.49, 1,745.91 and 793.26 is: 1,094.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265.49 : 1,745.91 = 793.26 : x
  2. Step 2: Convert to fraction form
    1,265.49/1,745.91 = 793.26/x
  3. Step 3: Cross multiply
    1,265.49x = 1,745.91 × 793.26
  4. Step 4: Simplify right side
    1,265.49x = 1,384,960.57
  5. Step 5: Solve for x
    x = 1,384,960.57/1,265.49
  6. Step 6: Final answer
    x = 1,094.41

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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.