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Finding the Fourth Proportional to 8,771.38, 12,104.49 and 4,792.49

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Solution

The fourth proportional to 8,771.38, 12,104.49 and 4,792.49 is: 6,613.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,771.38 : 12,104.49 = 4,792.49 : x
  2. Step 2: Convert to fraction form
    8,771.38/12,104.49 = 4,792.49/x
  3. Step 3: Cross multiply
    8,771.38x = 12,104.49 × 4,792.49
  4. Step 4: Simplify right side
    8,771.38x = 58,010,647.28
  5. Step 5: Solve for x
    x = 58,010,647.28/8,771.38
  6. Step 6: Final answer
    x = 6,613.63

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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.