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Finding the Fourth Proportional to 43,981.62, 65,980.53 and 14,401.09

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Solution

The fourth proportional to 43,981.62, 65,980.53 and 14,401.09 is: 21,604.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,981.62 : 65,980.53 = 14,401.09 : x
  2. Step 2: Convert to fraction form
    43,981.62/65,980.53 = 14,401.09/x
  3. Step 3: Cross multiply
    43,981.62x = 65,980.53 × 14,401.09
  4. Step 4: Simplify right side
    43,981.62x = 950,191,550.78
  5. Step 5: Solve for x
    x = 950,191,550.78/43,981.62
  6. Step 6: Final answer
    x = 21,604.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.