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Finding the Fourth Proportional to 3,382.91, 5,074.91 and 1,042.86

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Solution

The fourth proportional to 3,382.91, 5,074.91 and 1,042.86 is: 1,564.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,382.91 : 5,074.91 = 1,042.86 : x
  2. Step 2: Convert to fraction form
    3,382.91/5,074.91 = 1,042.86/x
  3. Step 3: Cross multiply
    3,382.91x = 5,074.91 × 1,042.86
  4. Step 4: Simplify right side
    3,382.91x = 5,292,412.76
  5. Step 5: Solve for x
    x = 5,292,412.76/3,382.91
  6. Step 6: Final answer
    x = 1,564.46

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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.