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Finding the Fourth Proportional to 61,986.21, 85,540.50 and 33,692.10

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Solution

The fourth proportional to 61,986.21, 85,540.50 and 33,692.10 is: 46,494.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,986.21 : 85,540.50 = 33,692.10 : x
  2. Step 2: Convert to fraction form
    61,986.21/85,540.50 = 33,692.10/x
  3. Step 3: Cross multiply
    61,986.21x = 85,540.50 × 33,692.10
  4. Step 4: Simplify right side
    61,986.21x = 2,882,039,080.05
  5. Step 5: Solve for x
    x = 2,882,039,080.05/61,986.21
  6. Step 6: Final answer
    x = 46,494.84

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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.