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Finding the Fourth Proportional to 61,817.83, 92,721.61 and 19,696.21

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Solution

The fourth proportional to 61,817.83, 92,721.61 and 19,696.21 is: 29,542.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,817.83 : 92,721.61 = 19,696.21 : x
  2. Step 2: Convert to fraction form
    61,817.83/92,721.61 = 19,696.21/x
  3. Step 3: Cross multiply
    61,817.83x = 92,721.61 × 19,696.21
  4. Step 4: Simplify right side
    61,817.83x = 1,826,264,021.05
  5. Step 5: Solve for x
    x = 1,826,264,021.05/61,817.83
  6. Step 6: Final answer
    x = 29,542.68

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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.