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Finding the Fourth Proportional to 131,912.79, 197,845.96 and 38,396.67

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Solution

The fourth proportional to 131,912.79, 197,845.96 and 38,396.67 is: 57,588.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,912.79 : 197,845.96 = 38,396.67 : x
  2. Step 2: Convert to fraction form
    131,912.79/197,845.96 = 38,396.67/x
  3. Step 3: Cross multiply
    131,912.79x = 197,845.96 × 38,396.67
  4. Step 4: Simplify right side
    131,912.79x = 7,596,626,036.95
  5. Step 5: Solve for x
    x = 7,596,626,036.95/131,912.79
  6. Step 6: Final answer
    x = 57,588.24

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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.