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Finding the Fourth Proportional to 61,504.76, 84,874.56 and 38,855.82

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Solution

The fourth proportional to 61,504.76, 84,874.56 and 38,855.82 is: 53,619.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,504.76 : 84,874.56 = 38,855.82 : x
  2. Step 2: Convert to fraction form
    61,504.76/84,874.56 = 38,855.82/x
  3. Step 3: Cross multiply
    61,504.76x = 84,874.56 × 38,855.82
  4. Step 4: Simplify right side
    61,504.76x = 3,297,870,625.94
  5. Step 5: Solve for x
    x = 3,297,870,625.94/61,504.76
  6. Step 6: Final answer
    x = 53,619.76

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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.