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Finding the Fourth Proportional to 1,016.55, 1,532.43 and 949.73

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Solution

The fourth proportional to 1,016.55, 1,532.43 and 949.73 is: 1,431.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,016.55 : 1,532.43 = 949.73 : x
  2. Step 2: Convert to fraction form
    1,016.55/1,532.43 = 949.73/x
  3. Step 3: Cross multiply
    1,016.55x = 1,532.43 × 949.73
  4. Step 4: Simplify right side
    1,016.55x = 1,455,387.08
  5. Step 5: Solve for x
    x = 1,455,387.08/1,016.55
  6. Step 6: Final answer
    x = 1,431.69

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.