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Finding the Fourth Proportional to 996.86, 1,494.66 and 448.94

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Solution

The fourth proportional to 996.86, 1,494.66 and 448.94 is: 673.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    996.86 : 1,494.66 = 448.94 : x
  2. Step 2: Convert to fraction form
    996.86/1,494.66 = 448.94/x
  3. Step 3: Cross multiply
    996.86x = 1,494.66 × 448.94
  4. Step 4: Simplify right side
    996.86x = 671,012.66
  5. Step 5: Solve for x
    x = 671,012.66/996.86
  6. Step 6: Final answer
    x = 673.13

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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.