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Finding the Fourth Proportional to 223,556.70, 308,506.95 and 122,954.70

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Solution

The fourth proportional to 223,556.70, 308,506.95 and 122,954.70 is: 169,676.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,556.70 : 308,506.95 = 122,954.70 : x
  2. Step 2: Convert to fraction form
    223,556.70/308,506.95 = 122,954.70/x
  3. Step 3: Cross multiply
    223,556.70x = 308,506.95 × 122,954.70
  4. Step 4: Simplify right side
    223,556.70x = 37,932,379,485.17
  5. Step 5: Solve for x
    x = 37,932,379,485.17/223,556.70
  6. Step 6: Final answer
    x = 169,676.77

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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.