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Finding the Fourth Proportional to 297,682.40, 446,581.20 and 87,327.20

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Solution

The fourth proportional to 297,682.40, 446,581.20 and 87,327.20 is: 131,007.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,682.40 : 446,581.20 = 87,327.20 : x
  2. Step 2: Convert to fraction form
    297,682.40/446,581.20 = 87,327.20/x
  3. Step 3: Cross multiply
    297,682.40x = 446,581.20 × 87,327.20
  4. Step 4: Simplify right side
    297,682.40x = 38,998,685,768.64
  5. Step 5: Solve for x
    x = 38,998,685,768.64/297,682.40
  6. Step 6: Final answer
    x = 131,007.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.