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Finding the Fourth Proportional to 1,040.62, 1,435.94 and 598.44

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Solution

The fourth proportional to 1,040.62, 1,435.94 and 598.44 is: 825.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040.62 : 1,435.94 = 598.44 : x
  2. Step 2: Convert to fraction form
    1,040.62/1,435.94 = 598.44/x
  3. Step 3: Cross multiply
    1,040.62x = 1,435.94 × 598.44
  4. Step 4: Simplify right side
    1,040.62x = 859,323.93
  5. Step 5: Solve for x
    x = 859,323.93/1,040.62
  6. Step 6: Final answer
    x = 825.78

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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.