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Finding the Fourth Proportional to 222,668.43, 307,301.88 and 122,085.87

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Solution

The fourth proportional to 222,668.43, 307,301.88 and 122,085.87 is: 168,489.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,668.43 : 307,301.88 = 122,085.87 : x
  2. Step 2: Convert to fraction form
    222,668.43/307,301.88 = 122,085.87/x
  3. Step 3: Cross multiply
    222,668.43x = 307,301.88 × 122,085.87
  4. Step 4: Simplify right side
    222,668.43x = 37,517,217,372.44
  5. Step 5: Solve for x
    x = 37,517,217,372.44/222,668.43
  6. Step 6: Final answer
    x = 168,489.16

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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.