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Finding the Fourth Proportional to 68,763.83, 102,675.29 and 61,601.85

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Solution

The fourth proportional to 68,763.83, 102,675.29 and 61,601.85 is: 91,981.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,763.83 : 102,675.29 = 61,601.85 : x
  2. Step 2: Convert to fraction form
    68,763.83/102,675.29 = 61,601.85/x
  3. Step 3: Cross multiply
    68,763.83x = 102,675.29 × 61,601.85
  4. Step 4: Simplify right side
    68,763.83x = 6,324,987,505.28
  5. Step 5: Solve for x
    x = 6,324,987,505.28/68,763.83
  6. Step 6: Final answer
    x = 91,981.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.