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Finding the Fourth Proportional to 61,905.66, 92,843.64 and 28,593.78

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Solution

The fourth proportional to 61,905.66, 92,843.64 and 28,593.78 is: 42,883.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,905.66 : 92,843.64 = 28,593.78 : x
  2. Step 2: Convert to fraction form
    61,905.66/92,843.64 = 28,593.78/x
  3. Step 3: Cross multiply
    61,905.66x = 92,843.64 × 28,593.78
  4. Step 4: Simplify right side
    61,905.66x = 2,654,750,616.56
  5. Step 5: Solve for x
    x = 2,654,750,616.56/61,905.66
  6. Step 6: Final answer
    x = 42,883.81

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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.