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Finding the Fourth Proportional to 9,318.43, 12,855.13 and 5,959.56

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Solution

The fourth proportional to 9,318.43, 12,855.13 and 5,959.56 is: 8,221.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318.43 : 12,855.13 = 5,959.56 : x
  2. Step 2: Convert to fraction form
    9,318.43/12,855.13 = 5,959.56/x
  3. Step 3: Cross multiply
    9,318.43x = 12,855.13 × 5,959.56
  4. Step 4: Simplify right side
    9,318.43x = 76,610,918.54
  5. Step 5: Solve for x
    x = 76,610,918.54/9,318.43
  6. Step 6: Final answer
    x = 8,221.44

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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.