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Finding the Fourth Proportional to 8,390.52, 11,579.17 and 4,613.49

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Solution

The fourth proportional to 8,390.52, 11,579.17 and 4,613.49 is: 6,366.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.52 : 11,579.17 = 4,613.49 : x
  2. Step 2: Convert to fraction form
    8,390.52/11,579.17 = 4,613.49/x
  3. Step 3: Cross multiply
    8,390.52x = 11,579.17 × 4,613.49
  4. Step 4: Simplify right side
    8,390.52x = 53,420,382.12
  5. Step 5: Solve for x
    x = 53,420,382.12/8,390.52
  6. Step 6: Final answer
    x = 6,366.75

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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.