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Finding the Fourth Proportional to 8,797.20, 13,206.60 and 8,732.40

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Solution

The fourth proportional to 8,797.20, 13,206.60 and 8,732.40 is: 13,109.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,797.20 : 13,206.60 = 8,732.40 : x
  2. Step 2: Convert to fraction form
    8,797.20/13,206.60 = 8,732.40/x
  3. Step 3: Cross multiply
    8,797.20x = 13,206.60 × 8,732.40
  4. Step 4: Simplify right side
    8,797.20x = 115,325,313.84
  5. Step 5: Solve for x
    x = 115,325,313.84/8,797.20
  6. Step 6: Final answer
    x = 13,109.32

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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.