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Finding the Fourth Proportional to 8,794.15, 12,135.56 and 4,815.19

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Solution

The fourth proportional to 8,794.15, 12,135.56 and 4,815.19 is: 6,644.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,794.15 : 12,135.56 = 4,815.19 : x
  2. Step 2: Convert to fraction form
    8,794.15/12,135.56 = 4,815.19/x
  3. Step 3: Cross multiply
    8,794.15x = 12,135.56 × 4,815.19
  4. Step 4: Simplify right side
    8,794.15x = 58,435,003.08
  5. Step 5: Solve for x
    x = 58,435,003.08/8,794.15
  6. Step 6: Final answer
    x = 6,644.76

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Double scale
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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.