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Finding the Fourth Proportional to 8,778.84, 12,114.81 and 4,799.97

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Solution

The fourth proportional to 8,778.84, 12,114.81 and 4,799.97 is: 6,623.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,778.84 : 12,114.81 = 4,799.97 : x
  2. Step 2: Convert to fraction form
    8,778.84/12,114.81 = 4,799.97/x
  3. Step 3: Cross multiply
    8,778.84x = 12,114.81 × 4,799.97
  4. Step 4: Simplify right side
    8,778.84x = 58,150,724.56
  5. Step 5: Solve for x
    x = 58,150,724.56/8,778.84
  6. Step 6: Final answer
    x = 6,623.96

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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.