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Finding the Fourth Proportional to 447,063.36, 670,593.96 and 131,519.76

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Solution

The fourth proportional to 447,063.36, 670,593.96 and 131,519.76 is: 197,279.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,063.36 : 670,593.96 = 131,519.76 : x
  2. Step 2: Convert to fraction form
    447,063.36/670,593.96 = 131,519.76/x
  3. Step 3: Cross multiply
    447,063.36x = 670,593.96 × 131,519.76
  4. Step 4: Simplify right side
    447,063.36x = 88,196,356,676.65
  5. Step 5: Solve for x
    x = 88,196,356,676.65/447,063.36
  6. Step 6: Final answer
    x = 197,279.32

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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.