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Finding the Fourth Proportional to 11,759.76, 16,229.28 and 7,773.96

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Solution

The fourth proportional to 11,759.76, 16,229.28 and 7,773.96 is: 10,728.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,759.76 : 16,229.28 = 7,773.96 : x
  2. Step 2: Convert to fraction form
    11,759.76/16,229.28 = 7,773.96/x
  3. Step 3: Cross multiply
    11,759.76x = 16,229.28 × 7,773.96
  4. Step 4: Simplify right side
    11,759.76x = 126,165,773.55
  5. Step 5: Solve for x
    x = 126,165,773.55/11,759.76
  6. Step 6: Final answer
    x = 10,728.60

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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.