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Finding the Fourth Proportional to 223,896.26, 308,744.60 and 172,917.30

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Solution

The fourth proportional to 223,896.26, 308,744.60 and 172,917.30 is: 238,446.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,896.26 : 308,744.60 = 172,917.30 : x
  2. Step 2: Convert to fraction form
    223,896.26/308,744.60 = 172,917.30/x
  3. Step 3: Cross multiply
    223,896.26x = 308,744.60 × 172,917.30
  4. Step 4: Simplify right side
    223,896.26x = 53,387,282,621.58
  5. Step 5: Solve for x
    x = 53,387,282,621.58/223,896.26
  6. Step 6: Final answer
    x = 238,446.51

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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.