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Finding the Fourth Proportional to 171,517.28, 236,696.36 and 99,895.44

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Solution

The fourth proportional to 171,517.28, 236,696.36 and 99,895.44 is: 137,857.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,517.28 : 236,696.36 = 99,895.44 : x
  2. Step 2: Convert to fraction form
    171,517.28/236,696.36 = 99,895.44/x
  3. Step 3: Cross multiply
    171,517.28x = 236,696.36 × 99,895.44
  4. Step 4: Simplify right side
    171,517.28x = 23,644,887,028.60
  5. Step 5: Solve for x
    x = 23,644,887,028.60/171,517.28
  6. Step 6: Final answer
    x = 137,857.17

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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.