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Finding the Fourth Proportional to 18,401.48, 25,395.90 and 10,850.12

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Solution

The fourth proportional to 18,401.48, 25,395.90 and 10,850.12 is: 14,974.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,401.48 : 25,395.90 = 10,850.12 : x
  2. Step 2: Convert to fraction form
    18,401.48/25,395.90 = 10,850.12/x
  3. Step 3: Cross multiply
    18,401.48x = 25,395.90 × 10,850.12
  4. Step 4: Simplify right side
    18,401.48x = 275,548,562.51
  5. Step 5: Solve for x
    x = 275,548,562.51/18,401.48
  6. Step 6: Final answer
    x = 14,974.26

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1.5x scale

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.