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Finding the Fourth Proportional to 70,966.79, 106,447.87 and 28,834.41

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Solution

The fourth proportional to 70,966.79, 106,447.87 and 28,834.41 is: 43,250.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,966.79 : 106,447.87 = 28,834.41 : x
  2. Step 2: Convert to fraction form
    70,966.79/106,447.87 = 28,834.41/x
  3. Step 3: Cross multiply
    70,966.79x = 106,447.87 × 28,834.41
  4. Step 4: Simplify right side
    70,966.79x = 3,069,361,527.21
  5. Step 5: Solve for x
    x = 3,069,361,527.21/70,966.79
  6. Step 6: Final answer
    x = 43,250.67

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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.