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Finding the Fourth Proportional to 28,893.82, 39,878.73 and 16,795.96

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Solution

The fourth proportional to 28,893.82, 39,878.73 and 16,795.96 is: 23,181.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,893.82 : 39,878.73 = 16,795.96 : x
  2. Step 2: Convert to fraction form
    28,893.82/39,878.73 = 16,795.96/x
  3. Step 3: Cross multiply
    28,893.82x = 39,878.73 × 16,795.96
  4. Step 4: Simplify right side
    28,893.82x = 669,801,553.93
  5. Step 5: Solve for x
    x = 669,801,553.93/28,893.82
  6. Step 6: Final answer
    x = 23,181.48

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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.