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Finding the Fourth Proportional to 17,239.78, 25,863.96 and 4,927.78

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Solution

The fourth proportional to 17,239.78, 25,863.96 and 4,927.78 is: 7,392.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,239.78 : 25,863.96 = 4,927.78 : x
  2. Step 2: Convert to fraction form
    17,239.78/25,863.96 = 4,927.78/x
  3. Step 3: Cross multiply
    17,239.78x = 25,863.96 × 4,927.78
  4. Step 4: Simplify right side
    17,239.78x = 127,451,904.81
  5. Step 5: Solve for x
    x = 127,451,904.81/17,239.78
  6. Step 6: Final answer
    x = 7,392.90

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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.