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Finding the Fourth Proportional to 78,696.26, 118,079.28 and 41,247.44

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Solution

The fourth proportional to 78,696.26, 118,079.28 and 41,247.44 is: 61,889.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,696.26 : 118,079.28 = 41,247.44 : x
  2. Step 2: Convert to fraction form
    78,696.26/118,079.28 = 41,247.44/x
  3. Step 3: Cross multiply
    78,696.26x = 118,079.28 × 41,247.44
  4. Step 4: Simplify right side
    78,696.26x = 4,870,467,426.65
  5. Step 5: Solve for x
    x = 4,870,467,426.65/78,696.26
  6. Step 6: Final answer
    x = 61,889.44

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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.