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Finding the Fourth Proportional to 133,469.70, 199,912.95 and 103,653.60

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Solution

The fourth proportional to 133,469.70, 199,912.95 and 103,653.60 is: 155,253.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,469.70 : 199,912.95 = 103,653.60 : x
  2. Step 2: Convert to fraction form
    133,469.70/199,912.95 = 103,653.60/x
  3. Step 3: Cross multiply
    133,469.70x = 199,912.95 × 103,653.60
  4. Step 4: Simplify right side
    133,469.70x = 20,721,696,954.12
  5. Step 5: Solve for x
    x = 20,721,696,954.12/133,469.70
  6. Step 6: Final answer
    x = 155,253.94

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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.