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Finding the Fourth Proportional to 12,465.42, 18,695.97 and 3,231.42

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Solution

The fourth proportional to 12,465.42, 18,695.97 and 3,231.42 is: 4,846.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,465.42 : 18,695.97 = 3,231.42 : x
  2. Step 2: Convert to fraction form
    12,465.42/18,695.97 = 3,231.42/x
  3. Step 3: Cross multiply
    12,465.42x = 18,695.97 × 3,231.42
  4. Step 4: Simplify right side
    12,465.42x = 60,414,531.38
  5. Step 5: Solve for x
    x = 60,414,531.38/12,465.42
  6. Step 6: Final answer
    x = 4,846.57

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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.