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Finding the Fourth Proportional to 383,205.56, 528,823.78 and 222,153.94

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Solution

The fourth proportional to 383,205.56, 528,823.78 and 222,153.94 is: 306,572.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,205.56 : 528,823.78 = 222,153.94 : x
  2. Step 2: Convert to fraction form
    383,205.56/528,823.78 = 222,153.94/x
  3. Step 3: Cross multiply
    383,205.56x = 528,823.78 × 222,153.94
  4. Step 4: Simplify right side
    383,205.56x = 117,480,286,292.69
  5. Step 5: Solve for x
    x = 117,480,286,292.69/383,205.56
  6. Step 6: Final answer
    x = 306,572.50

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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.