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Finding the Fourth Proportional to 222,489.20, 333,586.40 and 122,697.20

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Solution

The fourth proportional to 222,489.20, 333,586.40 and 122,697.20 is: 183,964.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,489.20 : 333,586.40 = 122,697.20 : x
  2. Step 2: Convert to fraction form
    222,489.20/333,586.40 = 122,697.20/x
  3. Step 3: Cross multiply
    222,489.20x = 333,586.40 × 122,697.20
  4. Step 4: Simplify right side
    222,489.20x = 40,930,117,238.08
  5. Step 5: Solve for x
    x = 40,930,117,238.08/222,489.20
  6. Step 6: Final answer
    x = 183,964.51

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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.