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Finding the Fourth Proportional to 12,163.92, 16,786.20 and 6,574.92

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Solution

The fourth proportional to 12,163.92, 16,786.20 and 6,574.92 is: 9,073.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,163.92 : 16,786.20 = 6,574.92 : x
  2. Step 2: Convert to fraction form
    12,163.92/16,786.20 = 6,574.92/x
  3. Step 3: Cross multiply
    12,163.92x = 16,786.20 × 6,574.92
  4. Step 4: Simplify right side
    12,163.92x = 110,367,980.51
  5. Step 5: Solve for x
    x = 110,367,980.51/12,163.92
  6. Step 6: Final answer
    x = 9,073.39

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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.