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Finding the Fourth Proportional to 68,060.86, 93,910.15 and 39,761.08

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Solution

The fourth proportional to 68,060.86, 93,910.15 and 39,761.08 is: 54,862.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,060.86 : 93,910.15 = 39,761.08 : x
  2. Step 2: Convert to fraction form
    68,060.86/93,910.15 = 39,761.08/x
  3. Step 3: Cross multiply
    68,060.86x = 93,910.15 × 39,761.08
  4. Step 4: Simplify right side
    68,060.86x = 3,733,968,801.89
  5. Step 5: Solve for x
    x = 3,733,968,801.89/68,060.86
  6. Step 6: Final answer
    x = 54,862.21

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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.