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Finding the Fourth Proportional to 18,803.70, 25,954.62 and 10,851.48

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Solution

The fourth proportional to 18,803.70, 25,954.62 and 10,851.48 is: 14,978.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.70 : 25,954.62 = 10,851.48 : x
  2. Step 2: Convert to fraction form
    18,803.70/25,954.62 = 10,851.48/x
  3. Step 3: Cross multiply
    18,803.70x = 25,954.62 × 10,851.48
  4. Step 4: Simplify right side
    18,803.70x = 281,646,039.84
  5. Step 5: Solve for x
    x = 281,646,039.84/18,803.70
  6. Step 6: Final answer
    x = 14,978.22

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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.