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Finding the Fourth Proportional to 61,690.68, 85,133.42 and 33,396.36

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Solution

The fourth proportional to 61,690.68, 85,133.42 and 33,396.36 is: 46,087.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,690.68 : 85,133.42 = 33,396.36 : x
  2. Step 2: Convert to fraction form
    61,690.68/85,133.42 = 33,396.36/x
  3. Step 3: Cross multiply
    61,690.68x = 85,133.42 × 33,396.36
  4. Step 4: Simplify right side
    61,690.68x = 2,843,146,175.37
  5. Step 5: Solve for x
    x = 2,843,146,175.37/61,690.68
  6. Step 6: Final answer
    x = 46,087.13

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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.