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Finding the Fourth Proportional to 17,858.92, 26,785.74 and 4,712.21

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Solution

The fourth proportional to 17,858.92, 26,785.74 and 4,712.21 is: 7,067.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,858.92 : 26,785.74 = 4,712.21 : x
  2. Step 2: Convert to fraction form
    17,858.92/26,785.74 = 4,712.21/x
  3. Step 3: Cross multiply
    17,858.92x = 26,785.74 × 4,712.21
  4. Step 4: Simplify right side
    17,858.92x = 126,220,031.89
  5. Step 5: Solve for x
    x = 126,220,031.89/17,858.92
  6. Step 6: Final answer
    x = 7,067.62

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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.