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Finding the Fourth Proportional to 18,745.92, 25,868.64 and 10,362.24

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Solution

The fourth proportional to 18,745.92, 25,868.64 and 10,362.24 is: 14,299.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,745.92 : 25,868.64 = 10,362.24 : x
  2. Step 2: Convert to fraction form
    18,745.92/25,868.64 = 10,362.24/x
  3. Step 3: Cross multiply
    18,745.92x = 25,868.64 × 10,362.24
  4. Step 4: Simplify right side
    18,745.92x = 268,057,056.15
  5. Step 5: Solve for x
    x = 268,057,056.15/18,745.92
  6. Step 6: Final answer
    x = 14,299.49

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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.