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Finding the Fourth Proportional to 57,709.50, 79,639.11 and 32,558.46

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Solution

The fourth proportional to 57,709.50, 79,639.11 and 32,558.46 is: 44,930.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,709.50 : 79,639.11 = 32,558.46 : x
  2. Step 2: Convert to fraction form
    57,709.50/79,639.11 = 32,558.46/x
  3. Step 3: Cross multiply
    57,709.50x = 79,639.11 × 32,558.46
  4. Step 4: Simplify right side
    57,709.50x = 2,592,926,777.37
  5. Step 5: Solve for x
    x = 2,592,926,777.37/57,709.50
  6. Step 6: Final answer
    x = 44,930.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.