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Finding the Fourth Proportional to 12,064.66, 16,649.22 and 6,687.44

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Solution

The fourth proportional to 12,064.66, 16,649.22 and 6,687.44 is: 9,228.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,064.66 : 16,649.22 = 6,687.44 : x
  2. Step 2: Convert to fraction form
    12,064.66/16,649.22 = 6,687.44/x
  3. Step 3: Cross multiply
    12,064.66x = 16,649.22 × 6,687.44
  4. Step 4: Simplify right side
    12,064.66x = 111,340,659.80
  5. Step 5: Solve for x
    x = 111,340,659.80/12,064.66
  6. Step 6: Final answer
    x = 9,228.66

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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.