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Finding the Fourth Proportional to 61,201.65, 84,436.62 and 39,993.22

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Solution

The fourth proportional to 61,201.65, 84,436.62 and 39,993.22 is: 55,176.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,201.65 : 84,436.62 = 39,993.22 : x
  2. Step 2: Convert to fraction form
    61,201.65/84,436.62 = 39,993.22/x
  3. Step 3: Cross multiply
    61,201.65x = 84,436.62 × 39,993.22
  4. Step 4: Simplify right side
    61,201.65x = 3,376,892,150.29
  5. Step 5: Solve for x
    x = 3,376,892,150.29/61,201.65
  6. Step 6: Final answer
    x = 55,176.49

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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.