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Finding the Fourth Proportional to 61,717.11, 85,168.98 and 34,859.54

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Solution

The fourth proportional to 61,717.11, 85,168.98 and 34,859.54 is: 48,105.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,717.11 : 85,168.98 = 34,859.54 : x
  2. Step 2: Convert to fraction form
    61,717.11/85,168.98 = 34,859.54/x
  3. Step 3: Cross multiply
    61,717.11x = 85,168.98 × 34,859.54
  4. Step 4: Simplify right side
    61,717.11x = 2,968,951,039.22
  5. Step 5: Solve for x
    x = 2,968,951,039.22/61,717.11
  6. Step 6: Final answer
    x = 48,105.80

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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.