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Finding the Fourth Proportional to 8,772.22, 12,109.08 and 5,938.21

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Solution

The fourth proportional to 8,772.22, 12,109.08 and 5,938.21 is: 8,197.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772.22 : 12,109.08 = 5,938.21 : x
  2. Step 2: Convert to fraction form
    8,772.22/12,109.08 = 5,938.21/x
  3. Step 3: Cross multiply
    8,772.22x = 12,109.08 × 5,938.21
  4. Step 4: Simplify right side
    8,772.22x = 71,906,259.95
  5. Step 5: Solve for x
    x = 71,906,259.95/8,772.22
  6. Step 6: Final answer
    x = 8,197.04

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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.