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Finding the Fourth Proportional to 695.48, 1,042.74 and 262.34

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Solution

The fourth proportional to 695.48, 1,042.74 and 262.34 is: 393.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.48 : 1,042.74 = 262.34 : x
  2. Step 2: Convert to fraction form
    695.48/1,042.74 = 262.34/x
  3. Step 3: Cross multiply
    695.48x = 1,042.74 × 262.34
  4. Step 4: Simplify right side
    695.48x = 273,552.41
  5. Step 5: Solve for x
    x = 273,552.41/695.48
  6. Step 6: Final answer
    x = 393.33

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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.