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Finding the Fourth Proportional to 316,676.52, 436,997.34 and 173,408.85

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Solution

The fourth proportional to 316,676.52, 436,997.34 and 173,408.85 is: 239,295.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,676.52 : 436,997.34 = 173,408.85 : x
  2. Step 2: Convert to fraction form
    316,676.52/436,997.34 = 173,408.85/x
  3. Step 3: Cross multiply
    316,676.52x = 436,997.34 × 173,408.85
  4. Step 4: Simplify right side
    316,676.52x = 75,779,206,182.46
  5. Step 5: Solve for x
    x = 75,779,206,182.46/316,676.52
  6. Step 6: Final answer
    x = 239,295.31

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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.