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Finding the Fourth Proportional to 8,794.20, 13,202.10 and 8,729.40

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Solution

The fourth proportional to 8,794.20, 13,202.10 and 8,729.40 is: 13,104.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,794.20 : 13,202.10 = 8,729.40 : x
  2. Step 2: Convert to fraction form
    8,794.20/13,202.10 = 8,729.40/x
  3. Step 3: Cross multiply
    8,794.20x = 13,202.10 × 8,729.40
  4. Step 4: Simplify right side
    8,794.20x = 115,246,411.74
  5. Step 5: Solve for x
    x = 115,246,411.74/8,794.20
  6. Step 6: Final answer
    x = 13,104.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.