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Finding the Fourth Proportional to 18,866, 25,993.56 and 14,065.52

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Solution

The fourth proportional to 18,866, 25,993.56 and 14,065.52 is: 19,379.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,866 : 25,993.56 = 14,065.52 : x
  2. Step 2: Convert to fraction form
    18,866/25,993.56 = 14,065.52/x
  3. Step 3: Cross multiply
    18,866x = 25,993.56 × 14,065.52
  4. Step 4: Simplify right side
    18,866x = 365,612,938.05
  5. Step 5: Solve for x
    x = 365,612,938.05/18,866
  6. Step 6: Final answer
    x = 19,379.46

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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.