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Finding the Fourth Proportional to 222,428.70, 333,610.65 and 64,640.70

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Solution

The fourth proportional to 222,428.70, 333,610.65 and 64,640.70 is: 96,951.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,428.70 : 333,610.65 = 64,640.70 : x
  2. Step 2: Convert to fraction form
    222,428.70/333,610.65 = 64,640.70/x
  3. Step 3: Cross multiply
    222,428.70x = 333,610.65 × 64,640.70
  4. Step 4: Simplify right side
    222,428.70x = 21,564,825,943.46
  5. Step 5: Solve for x
    x = 21,564,825,943.46/222,428.70
  6. Step 6: Final answer
    x = 96,951.63

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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.