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Finding the Fourth Proportional to 12,231.66, 18,347.49 and 3,465.48

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Solution

The fourth proportional to 12,231.66, 18,347.49 and 3,465.48 is: 5,198.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,231.66 : 18,347.49 = 3,465.48 : x
  2. Step 2: Convert to fraction form
    12,231.66/18,347.49 = 3,465.48/x
  3. Step 3: Cross multiply
    12,231.66x = 18,347.49 × 3,465.48
  4. Step 4: Simplify right side
    12,231.66x = 63,582,859.65
  5. Step 5: Solve for x
    x = 63,582,859.65/12,231.66
  6. Step 6: Final answer
    x = 5,198.22

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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.