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Finding the Fourth Proportional to 61,692.56, 85,135.89 and 33,398.30

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Solution

The fourth proportional to 61,692.56, 85,135.89 and 33,398.30 is: 46,089.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,692.56 : 85,135.89 = 33,398.30 : x
  2. Step 2: Convert to fraction form
    61,692.56/85,135.89 = 33,398.30/x
  3. Step 3: Cross multiply
    61,692.56x = 85,135.89 × 33,398.30
  4. Step 4: Simplify right side
    61,692.56x = 2,843,393,994.99
  5. Step 5: Solve for x
    x = 2,843,393,994.99/61,692.56
  6. Step 6: Final answer
    x = 46,089.74

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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.