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Finding the Fourth Proportional to 5,486.64, 7,571.72 and 3,002.64

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Solution

The fourth proportional to 5,486.64, 7,571.72 and 3,002.64 is: 4,143.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,486.64 : 7,571.72 = 3,002.64 : x
  2. Step 2: Convert to fraction form
    5,486.64/7,571.72 = 3,002.64/x
  3. Step 3: Cross multiply
    5,486.64x = 7,571.72 × 3,002.64
  4. Step 4: Simplify right side
    5,486.64x = 22,735,149.34
  5. Step 5: Solve for x
    x = 22,735,149.34/5,486.64
  6. Step 6: Final answer
    x = 4,143.73

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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.