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Finding the Fourth Proportional to 1,254.24, 1,879.83 and 706.95

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Solution

The fourth proportional to 1,254.24, 1,879.83 and 706.95 is: 1,059.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254.24 : 1,879.83 = 706.95 : x
  2. Step 2: Convert to fraction form
    1,254.24/1,879.83 = 706.95/x
  3. Step 3: Cross multiply
    1,254.24x = 1,879.83 × 706.95
  4. Step 4: Simplify right side
    1,254.24x = 1,328,945.82
  5. Step 5: Solve for x
    x = 1,328,945.82/1,254.24
  6. Step 6: Final answer
    x = 1,059.56

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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.