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Finding the Fourth Proportional to 393,061.70, 589,587.06 and 224,221.64

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Solution

The fourth proportional to 393,061.70, 589,587.06 and 224,221.64 is: 336,329.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,061.70 : 589,587.06 = 224,221.64 : x
  2. Step 2: Convert to fraction form
    393,061.70/589,587.06 = 224,221.64/x
  3. Step 3: Cross multiply
    393,061.70x = 589,587.06 × 224,221.64
  4. Step 4: Simplify right side
    393,061.70x = 132,198,177,515.98
  5. Step 5: Solve for x
    x = 132,198,177,515.98/393,061.70
  6. Step 6: Final answer
    x = 336,329.33

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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.