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Finding the Fourth Proportional to 18,523.50, 25,562.43 and 10,140

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Solution

The fourth proportional to 18,523.50, 25,562.43 and 10,140 is: 13,993.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,523.50 : 25,562.43 = 10,140 : x
  2. Step 2: Convert to fraction form
    18,523.50/25,562.43 = 10,140/x
  3. Step 3: Cross multiply
    18,523.50x = 25,562.43 × 10,140
  4. Step 4: Simplify right side
    18,523.50x = 259,203,040.20
  5. Step 5: Solve for x
    x = 259,203,040.20/18,523.50
  6. Step 6: Final answer
    x = 13,993.20

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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.