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Finding the Fourth Proportional to 18,814.62, 25,941.72 and 12,100.53

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Solution

The fourth proportional to 18,814.62, 25,941.72 and 12,100.53 is: 16,684.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,814.62 : 25,941.72 = 12,100.53 : x
  2. Step 2: Convert to fraction form
    18,814.62/25,941.72 = 12,100.53/x
  3. Step 3: Cross multiply
    18,814.62x = 25,941.72 × 12,100.53
  4. Step 4: Simplify right side
    18,814.62x = 313,908,431.40
  5. Step 5: Solve for x
    x = 313,908,431.40/18,814.62
  6. Step 6: Final answer
    x = 16,684.29

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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.