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Finding the Fourth Proportional to 27,653.64, 38,149.89 and 18,697.89

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Solution

The fourth proportional to 27,653.64, 38,149.89 and 18,697.89 is: 25,794.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,653.64 : 38,149.89 = 18,697.89 : x
  2. Step 2: Convert to fraction form
    27,653.64/38,149.89 = 18,697.89/x
  3. Step 3: Cross multiply
    27,653.64x = 38,149.89 × 18,697.89
  4. Step 4: Simplify right side
    27,653.64x = 713,322,446.73
  5. Step 5: Solve for x
    x = 713,322,446.73/27,653.64
  6. Step 6: Final answer
    x = 25,794.88

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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.