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Finding the Fourth Proportional to 61,872.56, 85,384.19 and 33,578.25

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Solution

The fourth proportional to 61,872.56, 85,384.19 and 33,578.25 is: 46,338.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,872.56 : 85,384.19 = 33,578.25 : x
  2. Step 2: Convert to fraction form
    61,872.56/85,384.19 = 33,578.25/x
  3. Step 3: Cross multiply
    61,872.56x = 85,384.19 × 33,578.25
  4. Step 4: Simplify right side
    61,872.56x = 2,867,051,677.87
  5. Step 5: Solve for x
    x = 2,867,051,677.87/61,872.56
  6. Step 6: Final answer
    x = 46,338.02

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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.