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Finding the Fourth Proportional to 448,758.20, 672,940.34 and 168,078.60

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Solution

The fourth proportional to 448,758.20, 672,940.34 and 168,078.60 is: 252,044.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,758.20 : 672,940.34 = 168,078.60 : x
  2. Step 2: Convert to fraction form
    448,758.20/672,940.34 = 168,078.60/x
  3. Step 3: Cross multiply
    448,758.20x = 672,940.34 × 168,078.60
  4. Step 4: Simplify right side
    448,758.20x = 113,106,870,230.72
  5. Step 5: Solve for x
    x = 113,106,870,230.72/448,758.20
  6. Step 6: Final answer
    x = 252,044.13

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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.