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Finding the Fourth Proportional to 45,498.67, 68,257.72 and 15,917.47

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Solution

The fourth proportional to 45,498.67, 68,257.72 and 15,917.47 is: 23,879.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,498.67 : 68,257.72 = 15,917.47 : x
  2. Step 2: Convert to fraction form
    45,498.67/68,257.72 = 15,917.47/x
  3. Step 3: Cross multiply
    45,498.67x = 68,257.72 × 15,917.47
  4. Step 4: Simplify right side
    45,498.67x = 1,086,490,059.62
  5. Step 5: Solve for x
    x = 1,086,490,059.62/45,498.67
  6. Step 6: Final answer
    x = 23,879.60

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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.