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Finding the Fourth Proportional to 20,893.49, 28,833.49 and 11,462.01

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Solution

The fourth proportional to 20,893.49, 28,833.49 and 11,462.01 is: 15,817.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,893.49 : 28,833.49 = 11,462.01 : x
  2. Step 2: Convert to fraction form
    20,893.49/28,833.49 = 11,462.01/x
  3. Step 3: Cross multiply
    20,893.49x = 28,833.49 × 11,462.01
  4. Step 4: Simplify right side
    20,893.49x = 330,489,693.40
  5. Step 5: Solve for x
    x = 330,489,693.40/20,893.49
  6. Step 6: Final answer
    x = 15,817.83

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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.