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Finding the Fourth Proportional to 5,771.44, 7,968.54 and 3,678.40

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Solution

The fourth proportional to 5,771.44, 7,968.54 and 3,678.40 is: 5,078.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,771.44 : 7,968.54 = 3,678.40 : x
  2. Step 2: Convert to fraction form
    5,771.44/7,968.54 = 3,678.40/x
  3. Step 3: Cross multiply
    5,771.44x = 7,968.54 × 3,678.40
  4. Step 4: Simplify right side
    5,771.44x = 29,311,477.54
  5. Step 5: Solve for x
    x = 29,311,477.54/5,771.44
  6. Step 6: Final answer
    x = 5,078.71

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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.