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Finding the Fourth Proportional to 43,767.99, 65,665.68 and 18,478.98

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Solution

The fourth proportional to 43,767.99, 65,665.68 and 18,478.98 is: 27,724.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,767.99 : 65,665.68 = 18,478.98 : x
  2. Step 2: Convert to fraction form
    43,767.99/65,665.68 = 18,478.98/x
  3. Step 3: Cross multiply
    43,767.99x = 65,665.68 × 18,478.98
  4. Step 4: Simplify right side
    43,767.99x = 1,213,434,787.41
  5. Step 5: Solve for x
    x = 1,213,434,787.41/43,767.99
  6. Step 6: Final answer
    x = 27,724.25

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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.