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Finding the Fourth Proportional to 8,467.82, 11,685.13 and 4,690.69

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Solution

The fourth proportional to 8,467.82, 11,685.13 and 4,690.69 is: 6,472.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,467.82 : 11,685.13 = 4,690.69 : x
  2. Step 2: Convert to fraction form
    8,467.82/11,685.13 = 4,690.69/x
  3. Step 3: Cross multiply
    8,467.82x = 11,685.13 × 4,690.69
  4. Step 4: Simplify right side
    8,467.82x = 54,811,281.50
  5. Step 5: Solve for x
    x = 54,811,281.50/8,467.82
  6. Step 6: Final answer
    x = 6,472.89

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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.