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Finding the Fourth Proportional to 18,123.70, 25,010.70 and 10,165.75

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Solution

The fourth proportional to 18,123.70, 25,010.70 and 10,165.75 is: 14,028.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,123.70 : 25,010.70 = 10,165.75 : x
  2. Step 2: Convert to fraction form
    18,123.70/25,010.70 = 10,165.75/x
  3. Step 3: Cross multiply
    18,123.70x = 25,010.70 × 10,165.75
  4. Step 4: Simplify right side
    18,123.70x = 254,252,523.53
  5. Step 5: Solve for x
    x = 254,252,523.53/18,123.70
  6. Step 6: Final answer
    x = 14,028.73

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