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Finding the Fourth Proportional to 8,586.60, 12,879.90 and 5,962.20

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Solution

The fourth proportional to 8,586.60, 12,879.90 and 5,962.20 is: 8,943.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,586.60 : 12,879.90 = 5,962.20 : x
  2. Step 2: Convert to fraction form
    8,586.60/12,879.90 = 5,962.20/x
  3. Step 3: Cross multiply
    8,586.60x = 12,879.90 × 5,962.20
  4. Step 4: Simplify right side
    8,586.60x = 76,792,539.78
  5. Step 5: Solve for x
    x = 76,792,539.78/8,586.60
  6. Step 6: Final answer
    x = 8,943.30

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Similar ratio
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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.