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Finding the Fourth Proportional to 22,593.90, 31,179.54 and 12,657.90

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Solution

The fourth proportional to 22,593.90, 31,179.54 and 12,657.90 is: 17,467.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,593.90 : 31,179.54 = 12,657.90 : x
  2. Step 2: Convert to fraction form
    22,593.90/31,179.54 = 12,657.90/x
  3. Step 3: Cross multiply
    22,593.90x = 31,179.54 × 12,657.90
  4. Step 4: Simplify right side
    22,593.90x = 394,667,499.37
  5. Step 5: Solve for x
    x = 394,667,499.37/22,593.90
  6. Step 6: Final answer
    x = 17,467.88

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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.