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Finding the Fourth Proportional to 18,551.29, 27,725.09 and 13,564.16

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Solution

The fourth proportional to 18,551.29, 27,725.09 and 13,564.16 is: 20,271.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,551.29 : 27,725.09 = 13,564.16 : x
  2. Step 2: Convert to fraction form
    18,551.29/27,725.09 = 13,564.16/x
  3. Step 3: Cross multiply
    18,551.29x = 27,725.09 × 13,564.16
  4. Step 4: Simplify right side
    18,551.29x = 376,067,633.45
  5. Step 5: Solve for x
    x = 376,067,633.45/18,551.29
  6. Step 6: Final answer
    x = 20,271.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.