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Finding the Fourth Proportional to 222,409.60, 333,160.80 and 137,910.40

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Solution

The fourth proportional to 222,409.60, 333,160.80 and 137,910.40 is: 206,584.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,409.60 : 333,160.80 = 137,910.40 : x
  2. Step 2: Convert to fraction form
    222,409.60/333,160.80 = 137,910.40/x
  3. Step 3: Cross multiply
    222,409.60x = 333,160.80 × 137,910.40
  4. Step 4: Simplify right side
    222,409.60x = 45,946,339,192.32
  5. Step 5: Solve for x
    x = 45,946,339,192.32/222,409.60
  6. Step 6: Final answer
    x = 206,584.33

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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.