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Finding the Fourth Proportional to 383,568.49, 529,331.48 and 213,784.39

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Solution

The fourth proportional to 383,568.49, 529,331.48 and 213,784.39 is: 295,026.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,568.49 : 529,331.48 = 213,784.39 : x
  2. Step 2: Convert to fraction form
    383,568.49/529,331.48 = 213,784.39/x
  3. Step 3: Cross multiply
    383,568.49x = 529,331.48 × 213,784.39
  4. Step 4: Simplify right side
    383,568.49x = 113,162,807,559.60
  5. Step 5: Solve for x
    x = 113,162,807,559.60/383,568.49
  6. Step 6: Final answer
    x = 295,026.34

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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.