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Finding the Fourth Proportional to 142,418.60, 213,609.36 and 37,245.68

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Solution

The fourth proportional to 142,418.60, 213,609.36 and 37,245.68 is: 55,863.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,418.60 : 213,609.36 = 37,245.68 : x
  2. Step 2: Convert to fraction form
    142,418.60/213,609.36 = 37,245.68/x
  3. Step 3: Cross multiply
    142,418.60x = 213,609.36 × 37,245.68
  4. Step 4: Simplify right side
    142,418.60x = 7,956,025,867.56
  5. Step 5: Solve for x
    x = 7,956,025,867.56/142,418.60
  6. Step 6: Final answer
    x = 55,863.67

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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.