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Finding the Fourth Proportional to 6,778.57, 9,354.42 and 3,794.40

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Solution

The fourth proportional to 6,778.57, 9,354.42 and 3,794.40 is: 5,236.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,778.57 : 9,354.42 = 3,794.40 : x
  2. Step 2: Convert to fraction form
    6,778.57/9,354.42 = 3,794.40/x
  3. Step 3: Cross multiply
    6,778.57x = 9,354.42 × 3,794.40
  4. Step 4: Simplify right side
    6,778.57x = 35,494,411.25
  5. Step 5: Solve for x
    x = 35,494,411.25/6,778.57
  6. Step 6: Final answer
    x = 5,236.27

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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.