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Finding the Fourth Proportional to 356,696.21, 535,111.89 and 188,057.09

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Solution

The fourth proportional to 356,696.21, 535,111.89 and 188,057.09 is: 282,121.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,696.21 : 535,111.89 = 188,057.09 : x
  2. Step 2: Convert to fraction form
    356,696.21/535,111.89 = 188,057.09/x
  3. Step 3: Cross multiply
    356,696.21x = 535,111.89 × 188,057.09
  4. Step 4: Simplify right side
    356,696.21x = 100,631,586,195.58
  5. Step 5: Solve for x
    x = 100,631,586,195.58/356,696.21
  6. Step 6: Final answer
    x = 282,121.27

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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.