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Finding the Fourth Proportional to 61,692.28, 85,135.92 and 33,398.56

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Solution

The fourth proportional to 61,692.28, 85,135.92 and 33,398.56 is: 46,090.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,692.28 : 85,135.92 = 33,398.56 : x
  2. Step 2: Convert to fraction form
    61,692.28/85,135.92 = 33,398.56/x
  3. Step 3: Cross multiply
    61,692.28x = 85,135.92 × 33,398.56
  4. Step 4: Simplify right side
    61,692.28x = 2,843,417,132.28
  5. Step 5: Solve for x
    x = 2,843,417,132.28/61,692.28
  6. Step 6: Final answer
    x = 46,090.32

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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.