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Finding the Fourth Proportional to 100,673.91, 150,682.26 and 74,012.84

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Solution

The fourth proportional to 100,673.91, 150,682.26 and 74,012.84 is: 110,777.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,673.91 : 150,682.26 = 74,012.84 : x
  2. Step 2: Convert to fraction form
    100,673.91/150,682.26 = 74,012.84/x
  3. Step 3: Cross multiply
    100,673.91x = 150,682.26 × 74,012.84
  4. Step 4: Simplify right side
    100,673.91x = 11,152,421,246.81
  5. Step 5: Solve for x
    x = 11,152,421,246.81/100,673.91
  6. Step 6: Final answer
    x = 110,777.67

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1.5x scale

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.