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Finding the Fourth Proportional to 56,749.55, 84,960.30 and 55,109.30

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Solution

The fourth proportional to 56,749.55, 84,960.30 and 55,109.30 is: 82,504.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,749.55 : 84,960.30 = 55,109.30 : x
  2. Step 2: Convert to fraction form
    56,749.55/84,960.30 = 55,109.30/x
  3. Step 3: Cross multiply
    56,749.55x = 84,960.30 × 55,109.30
  4. Step 4: Simplify right side
    56,749.55x = 4,682,102,660.79
  5. Step 5: Solve for x
    x = 4,682,102,660.79/56,749.55
  6. Step 6: Final answer
    x = 82,504.67

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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.