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Finding the Fourth Proportional to 995.46, 1,493.82 and 448.08

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Solution

The fourth proportional to 995.46, 1,493.82 and 448.08 is: 672.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.46 : 1,493.82 = 448.08 : x
  2. Step 2: Convert to fraction form
    995.46/1,493.82 = 448.08/x
  3. Step 3: Cross multiply
    995.46x = 1,493.82 × 448.08
  4. Step 4: Simplify right side
    995.46x = 669,350.87
  5. Step 5: Solve for x
    x = 669,350.87/995.46
  6. Step 6: Final answer
    x = 672.40

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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.