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Finding the Fourth Proportional to 25,918.44, 38,879.58 and 7,451.88

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Solution

The fourth proportional to 25,918.44, 38,879.58 and 7,451.88 is: 11,178.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,918.44 : 38,879.58 = 7,451.88 : x
  2. Step 2: Convert to fraction form
    25,918.44/38,879.58 = 7,451.88/x
  3. Step 3: Cross multiply
    25,918.44x = 38,879.58 × 7,451.88
  4. Step 4: Simplify right side
    25,918.44x = 289,725,964.61
  5. Step 5: Solve for x
    x = 289,725,964.61/25,918.44
  6. Step 6: Final answer
    x = 11,178.37

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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.