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Finding the Fourth Proportional to 8,590.26, 12,863.31 and 7,613.46

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Solution

The fourth proportional to 8,590.26, 12,863.31 and 7,613.46 is: 11,400.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,590.26 : 12,863.31 = 7,613.46 : x
  2. Step 2: Convert to fraction form
    8,590.26/12,863.31 = 7,613.46/x
  3. Step 3: Cross multiply
    8,590.26x = 12,863.31 × 7,613.46
  4. Step 4: Simplify right side
    8,590.26x = 97,934,296.15
  5. Step 5: Solve for x
    x = 97,934,296.15/8,590.26
  6. Step 6: Final answer
    x = 11,400.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.