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Finding the Fourth Proportional to 18,409.14, 25,404.78 and 10,025.64

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Solution

The fourth proportional to 18,409.14, 25,404.78 and 10,025.64 is: 13,835.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,409.14 : 25,404.78 = 10,025.64 : x
  2. Step 2: Convert to fraction form
    18,409.14/25,404.78 = 10,025.64/x
  3. Step 3: Cross multiply
    18,409.14x = 25,404.78 × 10,025.64
  4. Step 4: Simplify right side
    18,409.14x = 254,699,178.56
  5. Step 5: Solve for x
    x = 254,699,178.56/18,409.14
  6. Step 6: Final answer
    x = 13,835.47

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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.