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Finding the Fourth Proportional to 18,474.93, 25,491.42 and 10,408.55

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Solution

The fourth proportional to 18,474.93, 25,491.42 and 10,408.55 is: 14,361.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,474.93 : 25,491.42 = 10,408.55 : x
  2. Step 2: Convert to fraction form
    18,474.93/25,491.42 = 10,408.55/x
  3. Step 3: Cross multiply
    18,474.93x = 25,491.42 × 10,408.55
  4. Step 4: Simplify right side
    18,474.93x = 265,328,592.18
  5. Step 5: Solve for x
    x = 265,328,592.18/18,474.93
  6. Step 6: Final answer
    x = 14,361.55

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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.