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Finding the Fourth Proportional to 448,163.60, 672,375.96 and 132,628.88

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Solution

The fourth proportional to 448,163.60, 672,375.96 and 132,628.88 is: 198,981.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,163.60 : 672,375.96 = 132,628.88 : x
  2. Step 2: Convert to fraction form
    448,163.60/672,375.96 = 132,628.88/x
  3. Step 3: Cross multiply
    448,163.60x = 672,375.96 × 132,628.88
  4. Step 4: Simplify right side
    448,163.60x = 89,176,470,513.72
  5. Step 5: Solve for x
    x = 89,176,470,513.72/448,163.60
  6. Step 6: Final answer
    x = 198,981.96

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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.