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Finding the Fourth Proportional to 8,821.15, 12,173.22 and 4,842.33

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Solution

The fourth proportional to 8,821.15, 12,173.22 and 4,842.33 is: 6,682.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,821.15 : 12,173.22 = 4,842.33 : x
  2. Step 2: Convert to fraction form
    8,821.15/12,173.22 = 4,842.33/x
  3. Step 3: Cross multiply
    8,821.15x = 12,173.22 × 4,842.33
  4. Step 4: Simplify right side
    8,821.15x = 58,946,702.75
  5. Step 5: Solve for x
    x = 58,946,702.75/8,821.15
  6. Step 6: Final answer
    x = 6,682.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.