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Finding the Fourth Proportional to 18,464.63, 27,673.83 and 7,922.21

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Solution

The fourth proportional to 18,464.63, 27,673.83 and 7,922.21 is: 11,873.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,464.63 : 27,673.83 = 7,922.21 : x
  2. Step 2: Convert to fraction form
    18,464.63/27,673.83 = 7,922.21/x
  3. Step 3: Cross multiply
    18,464.63x = 27,673.83 × 7,922.21
  4. Step 4: Simplify right side
    18,464.63x = 219,237,754.40
  5. Step 5: Solve for x
    x = 219,237,754.40/18,464.63
  6. Step 6: Final answer
    x = 11,873.39

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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.