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Finding the Fourth Proportional to 7,792.16, 10,753.20 and 4,255.38

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Solution

The fourth proportional to 7,792.16, 10,753.20 and 4,255.38 is: 5,872.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,792.16 : 10,753.20 = 4,255.38 : x
  2. Step 2: Convert to fraction form
    7,792.16/10,753.20 = 4,255.38/x
  3. Step 3: Cross multiply
    7,792.16x = 10,753.20 × 4,255.38
  4. Step 4: Simplify right side
    7,792.16x = 45,758,952.22
  5. Step 5: Solve for x
    x = 45,758,952.22/7,792.16
  6. Step 6: Final answer
    x = 5,872.44

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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.