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Finding the Fourth Proportional to 1,048.75, 1,447.31 and 583.03

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Solution

The fourth proportional to 1,048.75, 1,447.31 and 583.03 is: 804.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.75 : 1,447.31 = 583.03 : x
  2. Step 2: Convert to fraction form
    1,048.75/1,447.31 = 583.03/x
  3. Step 3: Cross multiply
    1,048.75x = 1,447.31 × 583.03
  4. Step 4: Simplify right side
    1,048.75x = 843,822.23
  5. Step 5: Solve for x
    x = 843,822.23/1,048.75
  6. Step 6: Final answer
    x = 804.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.