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Finding the Fourth Proportional to 8,616.54, 11,892.12 and 5,261.30

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Solution

The fourth proportional to 8,616.54, 11,892.12 and 5,261.30 is: 7,261.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.54 : 11,892.12 = 5,261.30 : x
  2. Step 2: Convert to fraction form
    8,616.54/11,892.12 = 5,261.30/x
  3. Step 3: Cross multiply
    8,616.54x = 11,892.12 × 5,261.30
  4. Step 4: Simplify right side
    8,616.54x = 62,568,010.96
  5. Step 5: Solve for x
    x = 62,568,010.96/8,616.54
  6. Step 6: Final answer
    x = 7,261.38

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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.