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Finding the Fourth Proportional to 72,967.68, 100,696.64 and 41,137.11

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Solution

The fourth proportional to 72,967.68, 100,696.64 and 41,137.11 is: 56,769.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,967.68 : 100,696.64 = 41,137.11 : x
  2. Step 2: Convert to fraction form
    72,967.68/100,696.64 = 41,137.11/x
  3. Step 3: Cross multiply
    72,967.68x = 100,696.64 × 41,137.11
  4. Step 4: Simplify right side
    72,967.68x = 4,142,368,550.62
  5. Step 5: Solve for x
    x = 4,142,368,550.62/72,967.68
  6. Step 6: Final answer
    x = 56,769.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.