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Finding the Fourth Proportional to 61,892.53, 92,843.96 and 19,778.60

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Solution

The fourth proportional to 61,892.53, 92,843.96 and 19,778.60 is: 29,669.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,892.53 : 92,843.96 = 19,778.60 : x
  2. Step 2: Convert to fraction form
    61,892.53/92,843.96 = 19,778.60/x
  3. Step 3: Cross multiply
    61,892.53x = 92,843.96 × 19,778.60
  4. Step 4: Simplify right side
    61,892.53x = 1,836,323,680.47
  5. Step 5: Solve for x
    x = 1,836,323,680.47/61,892.53
  6. Step 6: Final answer
    x = 29,669.55

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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.