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Finding the Fourth Proportional to 22,343.56, 30,834.15 and 12,912.13

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Solution

The fourth proportional to 22,343.56, 30,834.15 and 12,912.13 is: 17,818.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,343.56 : 30,834.15 = 12,912.13 : x
  2. Step 2: Convert to fraction form
    22,343.56/30,834.15 = 12,912.13/x
  3. Step 3: Cross multiply
    22,343.56x = 30,834.15 × 12,912.13
  4. Step 4: Simplify right side
    22,343.56x = 398,134,553.24
  5. Step 5: Solve for x
    x = 398,134,553.24/22,343.56
  6. Step 6: Final answer
    x = 17,818.76

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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.