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Finding the Fourth Proportional to 8,616.96, 11,891.84 and 4,892.16

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Solution

The fourth proportional to 8,616.96, 11,891.84 and 4,892.16 is: 6,751.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.96 : 11,891.84 = 4,892.16 : x
  2. Step 2: Convert to fraction form
    8,616.96/11,891.84 = 4,892.16/x
  3. Step 3: Cross multiply
    8,616.96x = 11,891.84 × 4,892.16
  4. Step 4: Simplify right side
    8,616.96x = 58,176,783.97
  5. Step 5: Solve for x
    x = 58,176,783.97/8,616.96
  6. Step 6: Final answer
    x = 6,751.43

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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.