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Finding the Fourth Proportional to 8,796.60, 13,120.79 and 8,184.24

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Solution

The fourth proportional to 8,796.60, 13,120.79 and 8,184.24 is: 12,207.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,796.60 : 13,120.79 = 8,184.24 : x
  2. Step 2: Convert to fraction form
    8,796.60/13,120.79 = 8,184.24/x
  3. Step 3: Cross multiply
    8,796.60x = 13,120.79 × 8,184.24
  4. Step 4: Simplify right side
    8,796.60x = 107,383,653.43
  5. Step 5: Solve for x
    x = 107,383,653.43/8,796.60
  6. Step 6: Final answer
    x = 12,207.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.