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Finding the Fourth Proportional to 61,876.41, 85,324.89 and 36,721.05

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Solution

The fourth proportional to 61,876.41, 85,324.89 and 36,721.05 is: 50,636.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,876.41 : 85,324.89 = 36,721.05 : x
  2. Step 2: Convert to fraction form
    61,876.41/85,324.89 = 36,721.05/x
  3. Step 3: Cross multiply
    61,876.41x = 85,324.89 × 36,721.05
  4. Step 4: Simplify right side
    61,876.41x = 3,133,219,551.93
  5. Step 5: Solve for x
    x = 3,133,219,551.93/61,876.41
  6. Step 6: Final answer
    x = 50,636.74

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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.