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Finding the Fourth Proportional to 996.84, 1,495.26 and 448.47

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Solution

The fourth proportional to 996.84, 1,495.26 and 448.47 is: 672.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    996.84 : 1,495.26 = 448.47 : x
  2. Step 2: Convert to fraction form
    996.84/1,495.26 = 448.47/x
  3. Step 3: Cross multiply
    996.84x = 1,495.26 × 448.47
  4. Step 4: Simplify right side
    996.84x = 670,579.25
  5. Step 5: Solve for x
    x = 670,579.25/996.84
  6. Step 6: Final answer
    x = 672.71

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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.