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Finding the Fourth Proportional to 69,213.72, 103,787.76 and 35,900.46

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Solution

The fourth proportional to 69,213.72, 103,787.76 and 35,900.46 is: 53,833.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,213.72 : 103,787.76 = 35,900.46 : x
  2. Step 2: Convert to fraction form
    69,213.72/103,787.76 = 35,900.46/x
  3. Step 3: Cross multiply
    69,213.72x = 103,787.76 × 35,900.46
  4. Step 4: Simplify right side
    69,213.72x = 3,726,028,326.37
  5. Step 5: Solve for x
    x = 3,726,028,326.37/69,213.72
  6. Step 6: Final answer
    x = 53,833.67

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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.