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Finding the Fourth Proportional to 61,531, 84,912.82 and 33,236.69

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Solution

The fourth proportional to 61,531, 84,912.82 and 33,236.69 is: 45,866.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,531 : 84,912.82 = 33,236.69 : x
  2. Step 2: Convert to fraction form
    61,531/84,912.82 = 33,236.69/x
  3. Step 3: Cross multiply
    61,531x = 84,912.82 × 33,236.69
  4. Step 4: Simplify right side
    61,531x = 2,822,220,696.90
  5. Step 5: Solve for x
    x = 2,822,220,696.90/61,531
  6. Step 6: Final answer
    x = 45,866.65

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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.