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Finding the Fourth Proportional to 22,236.96, 30,687.72 and 12,676.67

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Solution

The fourth proportional to 22,236.96, 30,687.72 and 12,676.67 is: 17,494.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,236.96 : 30,687.72 = 12,676.67 : x
  2. Step 2: Convert to fraction form
    22,236.96/30,687.72 = 12,676.67/x
  3. Step 3: Cross multiply
    22,236.96x = 30,687.72 × 12,676.67
  4. Step 4: Simplify right side
    22,236.96x = 389,017,946.05
  5. Step 5: Solve for x
    x = 389,017,946.05/22,236.96
  6. Step 6: Final answer
    x = 17,494.21

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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.