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Finding the Fourth Proportional to 383,174.37, 528,796.98 and 213,408.51

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Solution

The fourth proportional to 383,174.37, 528,796.98 and 213,408.51 is: 294,512.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,174.37 : 528,796.98 = 213,408.51 : x
  2. Step 2: Convert to fraction form
    383,174.37/528,796.98 = 213,408.51/x
  3. Step 3: Cross multiply
    383,174.37x = 528,796.98 × 213,408.51
  4. Step 4: Simplify right side
    383,174.37x = 112,849,775,594.30
  5. Step 5: Solve for x
    x = 112,849,775,594.30/383,174.37
  6. Step 6: Final answer
    x = 294,512.85

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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.