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Finding the Fourth Proportional to 448,691.18, 672,891.14 and 149,091.30

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Solution

The fourth proportional to 448,691.18, 672,891.14 and 149,091.30 is: 223,588.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,691.18 : 672,891.14 = 149,091.30 : x
  2. Step 2: Convert to fraction form
    448,691.18/672,891.14 = 149,091.30/x
  3. Step 3: Cross multiply
    448,691.18x = 672,891.14 × 149,091.30
  4. Step 4: Simplify right side
    448,691.18x = 100,322,214,821.08
  5. Step 5: Solve for x
    x = 100,322,214,821.08/448,691.18
  6. Step 6: Final answer
    x = 223,588.56

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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.