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Finding the Fourth Proportional to 18,409.36, 25,404.90 and 10,025.92

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Solution

The fourth proportional to 18,409.36, 25,404.90 and 10,025.92 is: 13,835.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,409.36 : 25,404.90 = 10,025.92 : x
  2. Step 2: Convert to fraction form
    18,409.36/25,404.90 = 10,025.92/x
  3. Step 3: Cross multiply
    18,409.36x = 25,404.90 × 10,025.92
  4. Step 4: Simplify right side
    18,409.36x = 254,707,495.01
  5. Step 5: Solve for x
    x = 254,707,495.01/18,409.36
  6. Step 6: Final answer
    x = 13,835.76

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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.