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Finding the Fourth Proportional to 7,792.56, 10,753.56 and 4,255.78

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Solution

The fourth proportional to 7,792.56, 10,753.56 and 4,255.78 is: 5,872.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,792.56 : 10,753.56 = 4,255.78 : x
  2. Step 2: Convert to fraction form
    7,792.56/10,753.56 = 4,255.78/x
  3. Step 3: Cross multiply
    7,792.56x = 10,753.56 × 4,255.78
  4. Step 4: Simplify right side
    7,792.56x = 45,764,785.58
  5. Step 5: Solve for x
    x = 45,764,785.58/7,792.56
  6. Step 6: Final answer
    x = 5,872.89

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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.