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Finding the Fourth Proportional to 18,443.63, 27,643.82 and 8,562.11

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Solution

The fourth proportional to 18,443.63, 27,643.82 and 8,562.11 is: 12,833.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,443.63 : 27,643.82 = 8,562.11 : x
  2. Step 2: Convert to fraction form
    18,443.63/27,643.82 = 8,562.11/x
  3. Step 3: Cross multiply
    18,443.63x = 27,643.82 × 8,562.11
  4. Step 4: Simplify right side
    18,443.63x = 236,689,246.63
  5. Step 5: Solve for x
    x = 236,689,246.63/18,443.63
  6. Step 6: Final answer
    x = 12,833.11

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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.