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Finding the Fourth Proportional to 8,631.33, 12,937.99 and 5,858.22

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Solution

The fourth proportional to 8,631.33, 12,937.99 and 5,858.22 is: 8,781.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.33 : 12,937.99 = 5,858.22 : x
  2. Step 2: Convert to fraction form
    8,631.33/12,937.99 = 5,858.22/x
  3. Step 3: Cross multiply
    8,631.33x = 12,937.99 × 5,858.22
  4. Step 4: Simplify right side
    8,631.33x = 75,793,591.78
  5. Step 5: Solve for x
    x = 75,793,591.78/8,631.33
  6. Step 6: Final answer
    x = 8,781.22

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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.