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Finding the Fourth Proportional to 18,782.61, 25,867.71 and 14,517.96

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Solution

The fourth proportional to 18,782.61, 25,867.71 and 14,517.96 is: 19,994.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,782.61 : 25,867.71 = 14,517.96 : x
  2. Step 2: Convert to fraction form
    18,782.61/25,867.71 = 14,517.96/x
  3. Step 3: Cross multiply
    18,782.61x = 25,867.71 × 14,517.96
  4. Step 4: Simplify right side
    18,782.61x = 375,546,379.07
  5. Step 5: Solve for x
    x = 375,546,379.07/18,782.61
  6. Step 6: Final answer
    x = 19,994.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.