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Finding the Third Proportional to 18,991.13 and 41,779.13

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Solution

The third proportional to 18,991.13 and 41,779.13 is: 91,911.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,991.13 : 41,779.13 = 41,779.13 : x
  2. Step 2: Convert to fraction form
    18,991.13/41,779.13 = 41,779.13/x
  3. Step 3: Cross multiply
    18,991.13x = 41,779.13 × 41,779.13
  4. Step 4: Simplify right side
    18,991.13x = 1,745,495,285.77
  5. Step 5: Solve for x
    x = 1,745,495,285.77/18,991.13
  6. Step 6: Final answer
    x = 91,911.11

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.