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Finding the Fourth Proportional to 19,899.44, 29,841.60 and 8,205.92

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Solution

The fourth proportional to 19,899.44, 29,841.60 and 8,205.92 is: 12,305.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,899.44 : 29,841.60 = 8,205.92 : x
  2. Step 2: Convert to fraction form
    19,899.44/29,841.60 = 8,205.92/x
  3. Step 3: Cross multiply
    19,899.44x = 29,841.60 × 8,205.92
  4. Step 4: Simplify right side
    19,899.44x = 244,877,782.27
  5. Step 5: Solve for x
    x = 244,877,782.27/19,899.44
  6. Step 6: Final answer
    x = 12,305.76

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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.