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Finding the Fourth Proportional to 447,213.98, 670,825.65 and 131,676.86

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Solution

The fourth proportional to 447,213.98, 670,825.65 and 131,676.86 is: 197,516.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,213.98 : 670,825.65 = 131,676.86 : x
  2. Step 2: Convert to fraction form
    447,213.98/670,825.65 = 131,676.86/x
  3. Step 3: Cross multiply
    447,213.98x = 670,825.65 × 131,676.86
  4. Step 4: Simplify right side
    447,213.98x = 88,332,215,199.46
  5. Step 5: Solve for x
    x = 88,332,215,199.46/447,213.98
  6. Step 6: Final answer
    x = 197,516.67

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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.