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Finding the Fourth Proportional to 68,893.35, 103,319.51 and 26,779.97

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Solution

The fourth proportional to 68,893.35, 103,319.51 and 26,779.97 is: 40,161.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,893.35 : 103,319.51 = 26,779.97 : x
  2. Step 2: Convert to fraction form
    68,893.35/103,319.51 = 26,779.97/x
  3. Step 3: Cross multiply
    68,893.35x = 103,319.51 × 26,779.97
  4. Step 4: Simplify right side
    68,893.35x = 2,766,892,727.72
  5. Step 5: Solve for x
    x = 2,766,892,727.72/68,893.35
  6. Step 6: Final answer
    x = 40,161.97

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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.