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Finding the Fourth Proportional to 383,249.57, 528,896.40 and 219,935.96

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Solution

The fourth proportional to 383,249.57, 528,896.40 and 219,935.96 is: 303,518.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,249.57 : 528,896.40 = 219,935.96 : x
  2. Step 2: Convert to fraction form
    383,249.57/528,896.40 = 219,935.96/x
  3. Step 3: Cross multiply
    383,249.57x = 528,896.40 × 219,935.96
  4. Step 4: Simplify right side
    383,249.57x = 116,323,334,830.06
  5. Step 5: Solve for x
    x = 116,323,334,830.06/383,249.57
  6. Step 6: Final answer
    x = 303,518.50

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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.