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Finding the Fourth Proportional to 49,955.72, 74,961.90 and 18,361.67

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Solution

The fourth proportional to 49,955.72, 74,961.90 and 18,361.67 is: 27,552.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,955.72 : 74,961.90 = 18,361.67 : x
  2. Step 2: Convert to fraction form
    49,955.72/74,961.90 = 18,361.67/x
  3. Step 3: Cross multiply
    49,955.72x = 74,961.90 × 18,361.67
  4. Step 4: Simplify right side
    49,955.72x = 1,376,425,670.37
  5. Step 5: Solve for x
    x = 1,376,425,670.37/49,955.72
  6. Step 6: Final answer
    x = 27,552.91

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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.