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Finding the Fourth Proportional to 221,960.74, 332,990.88 and 64,201.45

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Solution

The fourth proportional to 221,960.74, 332,990.88 and 64,201.45 is: 96,316.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,960.74 : 332,990.88 = 64,201.45 : x
  2. Step 2: Convert to fraction form
    221,960.74/332,990.88 = 64,201.45/x
  3. Step 3: Cross multiply
    221,960.74x = 332,990.88 × 64,201.45
  4. Step 4: Simplify right side
    221,960.74x = 21,378,497,332.78
  5. Step 5: Solve for x
    x = 21,378,497,332.78/221,960.74
  6. Step 6: Final answer
    x = 96,316.57

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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.