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Finding the Fourth Proportional to 100,668.90, 151,021.57 and 41,471.67

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Solution

The fourth proportional to 100,668.90, 151,021.57 and 41,471.67 is: 62,215.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,668.90 : 151,021.57 = 41,471.67 : x
  2. Step 2: Convert to fraction form
    100,668.90/151,021.57 = 41,471.67/x
  3. Step 3: Cross multiply
    100,668.90x = 151,021.57 × 41,471.67
  4. Step 4: Simplify right side
    100,668.90x = 6,263,116,713.92
  5. Step 5: Solve for x
    x = 6,263,116,713.92/100,668.90
  6. Step 6: Final answer
    x = 62,215.01

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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.