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Finding the Fourth Proportional to 61,978.61, 92,994.21 and 33,865.82

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Solution

The fourth proportional to 61,978.61, 92,994.21 and 33,865.82 is: 50,813.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,978.61 : 92,994.21 = 33,865.82 : x
  2. Step 2: Convert to fraction form
    61,978.61/92,994.21 = 33,865.82/x
  3. Step 3: Cross multiply
    61,978.61x = 92,994.21 × 33,865.82
  4. Step 4: Simplify right side
    61,978.61x = 3,149,325,465.08
  5. Step 5: Solve for x
    x = 3,149,325,465.08/61,978.61
  6. Step 6: Final answer
    x = 50,813.11

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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.