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Finding the Fourth Proportional to 61,716.63, 85,168.26 and 36,218.44

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Solution

The fourth proportional to 61,716.63, 85,168.26 and 36,218.44 is: 49,981.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,716.63 : 85,168.26 = 36,218.44 : x
  2. Step 2: Convert to fraction form
    61,716.63/85,168.26 = 36,218.44/x
  3. Step 3: Cross multiply
    61,716.63x = 85,168.26 × 36,218.44
  4. Step 4: Simplify right side
    61,716.63x = 3,084,661,621.17
  5. Step 5: Solve for x
    x = 3,084,661,621.17/61,716.63
  6. Step 6: Final answer
    x = 49,981.04

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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.