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Finding the Fourth Proportional to 18,031.98, 27,061.92 and 12,523.98

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Solution

The fourth proportional to 18,031.98, 27,061.92 and 12,523.98 is: 18,795.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,031.98 : 27,061.92 = 12,523.98 : x
  2. Step 2: Convert to fraction form
    18,031.98/27,061.92 = 12,523.98/x
  3. Step 3: Cross multiply
    18,031.98x = 27,061.92 × 12,523.98
  4. Step 4: Simplify right side
    18,031.98x = 338,922,944.84
  5. Step 5: Solve for x
    x = 338,922,944.84/18,031.98
  6. Step 6: Final answer
    x = 18,795.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.