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Finding the Fourth Proportional to 8,855.74, 12,223.20 and 5,496.58

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Solution

The fourth proportional to 8,855.74, 12,223.20 and 5,496.58 is: 7,586.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,855.74 : 12,223.20 = 5,496.58 : x
  2. Step 2: Convert to fraction form
    8,855.74/12,223.20 = 5,496.58/x
  3. Step 3: Cross multiply
    8,855.74x = 12,223.20 × 5,496.58
  4. Step 4: Simplify right side
    8,855.74x = 67,185,796.66
  5. Step 5: Solve for x
    x = 67,185,796.66/8,855.74
  6. Step 6: Final answer
    x = 7,586.69

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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.