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Finding the Fourth Proportional to 639,705.88, 882,794.10 and 353,226.52

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Solution

The fourth proportional to 639,705.88, 882,794.10 and 353,226.52 is: 487,452.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,705.88 : 882,794.10 = 353,226.52 : x
  2. Step 2: Convert to fraction form
    639,705.88/882,794.10 = 353,226.52/x
  3. Step 3: Cross multiply
    639,705.88x = 882,794.10 × 353,226.52
  4. Step 4: Simplify right side
    639,705.88x = 311,826,287,819.53
  5. Step 5: Solve for x
    x = 311,826,287,819.53/639,705.88
  6. Step 6: Final answer
    x = 487,452.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.