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Finding the Fourth Proportional to 18,408.62, 25,404.18 and 10,025.12

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Solution

The fourth proportional to 18,408.62, 25,404.18 and 10,025.12 is: 13,834.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,408.62 : 25,404.18 = 10,025.12 : x
  2. Step 2: Convert to fraction form
    18,408.62/25,404.18 = 10,025.12/x
  3. Step 3: Cross multiply
    18,408.62x = 25,404.18 × 10,025.12
  4. Step 4: Simplify right side
    18,408.62x = 254,679,953.00
  5. Step 5: Solve for x
    x = 254,679,953.00/18,408.62
  6. Step 6: Final answer
    x = 13,834.82

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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.