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Finding the Fourth Proportional to 61,761.84, 92,620.06 and 21,223.85

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Solution

The fourth proportional to 61,761.84, 92,620.06 and 21,223.85 is: 31,827.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,761.84 : 92,620.06 = 21,223.85 : x
  2. Step 2: Convert to fraction form
    61,761.84/92,620.06 = 21,223.85/x
  3. Step 3: Cross multiply
    61,761.84x = 92,620.06 × 21,223.85
  4. Step 4: Simplify right side
    61,761.84x = 1,965,754,260.43
  5. Step 5: Solve for x
    x = 1,965,754,260.43/61,761.84
  6. Step 6: Final answer
    x = 31,827.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.