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Finding the Fourth Proportional to 12,449.66, 18,674.52 and 8,542.22

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Solution

The fourth proportional to 12,449.66, 18,674.52 and 8,542.22 is: 12,813.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,449.66 : 18,674.52 = 8,542.22 : x
  2. Step 2: Convert to fraction form
    12,449.66/18,674.52 = 8,542.22/x
  3. Step 3: Cross multiply
    12,449.66x = 18,674.52 × 8,542.22
  4. Step 4: Simplify right side
    12,449.66x = 159,521,858.23
  5. Step 5: Solve for x
    x = 159,521,858.23/12,449.66
  6. Step 6: Final answer
    x = 12,813.35

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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.