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Finding the Fourth Proportional to 72,696.64, 108,936.88 and 37,589.44

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Solution

The fourth proportional to 72,696.64, 108,936.88 and 37,589.44 is: 56,328.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,696.64 : 108,936.88 = 37,589.44 : x
  2. Step 2: Convert to fraction form
    72,696.64/108,936.88 = 37,589.44/x
  3. Step 3: Cross multiply
    72,696.64x = 108,936.88 × 37,589.44
  4. Step 4: Simplify right side
    72,696.64x = 4,094,876,314.55
  5. Step 5: Solve for x
    x = 4,094,876,314.55/72,696.64
  6. Step 6: Final answer
    x = 56,328.27

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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.