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Finding the Fourth Proportional to 8,793.12, 13,179.42 and 7,152.60

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Solution

The fourth proportional to 8,793.12, 13,179.42 and 7,152.60 is: 10,720.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,793.12 : 13,179.42 = 7,152.60 : x
  2. Step 2: Convert to fraction form
    8,793.12/13,179.42 = 7,152.60/x
  3. Step 3: Cross multiply
    8,793.12x = 13,179.42 × 7,152.60
  4. Step 4: Simplify right side
    8,793.12x = 94,267,119.49
  5. Step 5: Solve for x
    x = 94,267,119.49/8,793.12
  6. Step 6: Final answer
    x = 10,720.55

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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.