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Finding the Fourth Proportional to 61,690.70, 85,133.06 and 33,396.38

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Solution

The fourth proportional to 61,690.70, 85,133.06 and 33,396.38 is: 46,086.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,690.70 : 85,133.06 = 33,396.38 : x
  2. Step 2: Convert to fraction form
    61,690.70/85,133.06 = 33,396.38/x
  3. Step 3: Cross multiply
    61,690.70x = 85,133.06 × 33,396.38
  4. Step 4: Simplify right side
    61,690.70x = 2,843,136,022.32
  5. Step 5: Solve for x
    x = 2,843,136,022.32/61,690.70
  6. Step 6: Final answer
    x = 46,086.95

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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.