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Finding the Fourth Proportional to 383,086.19, 528,658.92 and 222,034.66

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Solution

The fourth proportional to 383,086.19, 528,658.92 and 222,034.66 is: 306,407.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,086.19 : 528,658.92 = 222,034.66 : x
  2. Step 2: Convert to fraction form
    383,086.19/528,658.92 = 222,034.66/x
  3. Step 3: Cross multiply
    383,086.19x = 528,658.92 × 222,034.66
  4. Step 4: Simplify right side
    383,086.19x = 117,380,599,804.70
  5. Step 5: Solve for x
    x = 117,380,599,804.70/383,086.19
  6. Step 6: Final answer
    x = 306,407.81

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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.