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Finding the Fourth Proportional to 383,344.56, 529,019.11 and 211,268.82

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Solution

The fourth proportional to 383,344.56, 529,019.11 and 211,268.82 is: 291,552.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,344.56 : 529,019.11 = 211,268.82 : x
  2. Step 2: Convert to fraction form
    383,344.56/529,019.11 = 211,268.82/x
  3. Step 3: Cross multiply
    383,344.56x = 529,019.11 × 211,268.82
  4. Step 4: Simplify right side
    383,344.56x = 111,765,243,127.15
  5. Step 5: Solve for x
    x = 111,765,243,127.15/383,344.56
  6. Step 6: Final answer
    x = 291,552.97

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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.