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Finding the Fourth Proportional to 8,771.76, 12,104.70 and 4,792.84

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Solution

The fourth proportional to 8,771.76, 12,104.70 and 4,792.84 is: 6,613.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,771.76 : 12,104.70 = 4,792.84 : x
  2. Step 2: Convert to fraction form
    8,771.76/12,104.70 = 4,792.84/x
  3. Step 3: Cross multiply
    8,771.76x = 12,104.70 × 4,792.84
  4. Step 4: Simplify right side
    8,771.76x = 58,015,890.35
  5. Step 5: Solve for x
    x = 58,015,890.35/8,771.76
  6. Step 6: Final answer
    x = 6,613.94

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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.