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Finding the Fourth Proportional to 8,716.52, 12,020.52 and 5,734.88

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Solution

The fourth proportional to 8,716.52, 12,020.52 and 5,734.88 is: 7,908.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,716.52 : 12,020.52 = 5,734.88 : x
  2. Step 2: Convert to fraction form
    8,716.52/12,020.52 = 5,734.88/x
  3. Step 3: Cross multiply
    8,716.52x = 12,020.52 × 5,734.88
  4. Step 4: Simplify right side
    8,716.52x = 68,936,239.74
  5. Step 5: Solve for x
    x = 68,936,239.74/8,716.52
  6. Step 6: Final answer
    x = 7,908.69

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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.