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Finding the Fourth Proportional to 74,668.70, 112,049.94 and 30,295.64

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Solution

The fourth proportional to 74,668.70, 112,049.94 and 30,295.64 is: 45,462.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,668.70 : 112,049.94 = 30,295.64 : x
  2. Step 2: Convert to fraction form
    74,668.70/112,049.94 = 30,295.64/x
  3. Step 3: Cross multiply
    74,668.70x = 112,049.94 × 30,295.64
  4. Step 4: Simplify right side
    74,668.70x = 3,394,624,644.26
  5. Step 5: Solve for x
    x = 3,394,624,644.26/74,668.70
  6. Step 6: Final answer
    x = 45,462.48

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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.