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Finding the Fourth Proportional to 8,771.22, 12,102.21 and 4,994.46

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Solution

The fourth proportional to 8,771.22, 12,102.21 and 4,994.46 is: 6,891.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,771.22 : 12,102.21 = 4,994.46 : x
  2. Step 2: Convert to fraction form
    8,771.22/12,102.21 = 4,994.46/x
  3. Step 3: Cross multiply
    8,771.22x = 12,102.21 × 4,994.46
  4. Step 4: Simplify right side
    8,771.22x = 60,444,003.76
  5. Step 5: Solve for x
    x = 60,444,003.76/8,771.22
  6. Step 6: Final answer
    x = 6,891.17

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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.