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Finding the Fourth Proportional to 383,199.28, 528,815.16 and 222,147.70

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Solution

The fourth proportional to 383,199.28, 528,815.16 and 222,147.70 is: 306,563.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,199.28 : 528,815.16 = 222,147.70 : x
  2. Step 2: Convert to fraction form
    383,199.28/528,815.16 = 222,147.70/x
  3. Step 3: Cross multiply
    383,199.28x = 528,815.16 × 222,147.70
  4. Step 4: Simplify right side
    383,199.28x = 117,475,070,197.09
  5. Step 5: Solve for x
    x = 117,475,070,197.09/383,199.28
  6. Step 6: Final answer
    x = 306,563.91

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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.