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Finding the Fourth Proportional to 6,745.88, 9,306.42 and 3,913.04

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Solution

The fourth proportional to 6,745.88, 9,306.42 and 3,913.04 is: 5,398.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,745.88 : 9,306.42 = 3,913.04 : x
  2. Step 2: Convert to fraction form
    6,745.88/9,306.42 = 3,913.04/x
  3. Step 3: Cross multiply
    6,745.88x = 9,306.42 × 3,913.04
  4. Step 4: Simplify right side
    6,745.88x = 36,416,393.72
  5. Step 5: Solve for x
    x = 36,416,393.72/6,745.88
  6. Step 6: Final answer
    x = 5,398.32

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1.5x scale

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.