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Finding the Fourth Proportional to 19,893.06, 29,847.49 and 8,203.55

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Solution

The fourth proportional to 19,893.06, 29,847.49 and 8,203.55 is: 12,308.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,893.06 : 29,847.49 = 8,203.55 : x
  2. Step 2: Convert to fraction form
    19,893.06/29,847.49 = 8,203.55/x
  3. Step 3: Cross multiply
    19,893.06x = 29,847.49 × 8,203.55
  4. Step 4: Simplify right side
    19,893.06x = 244,855,206.84
  5. Step 5: Solve for x
    x = 244,855,206.84/19,893.06
  6. Step 6: Final answer
    x = 12,308.57

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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.