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Finding the Fourth Proportional to 995.25, 1,493.42 and 482.25

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Solution

The fourth proportional to 995.25, 1,493.42 and 482.25 is: 723.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.25 : 1,493.42 = 482.25 : x
  2. Step 2: Convert to fraction form
    995.25/1,493.42 = 482.25/x
  3. Step 3: Cross multiply
    995.25x = 1,493.42 × 482.25
  4. Step 4: Simplify right side
    995.25x = 720,199.38
  5. Step 5: Solve for x
    x = 720,199.38/995.25
  6. Step 6: Final answer
    x = 723.64

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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.