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Finding the Fourth Proportional to 18,651.18, 25,737.81 and 10,153.32

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Solution

The fourth proportional to 18,651.18, 25,737.81 and 10,153.32 is: 14,011.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651.18 : 25,737.81 = 10,153.32 : x
  2. Step 2: Convert to fraction form
    18,651.18/25,737.81 = 10,153.32/x
  3. Step 3: Cross multiply
    18,651.18x = 25,737.81 × 10,153.32
  4. Step 4: Simplify right side
    18,651.18x = 261,324,221.03
  5. Step 5: Solve for x
    x = 261,324,221.03/18,651.18
  6. Step 6: Final answer
    x = 14,011.14

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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.