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Finding the Fourth Proportional to 22,410.98, 30,926.90 and 12,339.21

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Solution

The fourth proportional to 22,410.98, 30,926.90 and 12,339.21 is: 17,027.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,410.98 : 30,926.90 = 12,339.21 : x
  2. Step 2: Convert to fraction form
    22,410.98/30,926.90 = 12,339.21/x
  3. Step 3: Cross multiply
    22,410.98x = 30,926.90 × 12,339.21
  4. Step 4: Simplify right side
    22,410.98x = 381,613,452.05
  5. Step 5: Solve for x
    x = 381,613,452.05/22,410.98
  6. Step 6: Final answer
    x = 17,027.97

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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.