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Finding the Fourth Proportional to 22,359.46, 30,855.21 and 12,423.46

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Solution

The fourth proportional to 22,359.46, 30,855.21 and 12,423.46 is: 17,143.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,359.46 : 30,855.21 = 12,423.46 : x
  2. Step 2: Convert to fraction form
    22,359.46/30,855.21 = 12,423.46/x
  3. Step 3: Cross multiply
    22,359.46x = 30,855.21 × 12,423.46
  4. Step 4: Simplify right side
    22,359.46x = 383,328,467.23
  5. Step 5: Solve for x
    x = 383,328,467.23/22,359.46
  6. Step 6: Final answer
    x = 17,143.91

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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.