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Finding the Fourth Proportional to 89,672.70, 134,446.14 and 39,725.67

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Solution

The fourth proportional to 89,672.70, 134,446.14 and 39,725.67 is: 59,560.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,672.70 : 134,446.14 = 39,725.67 : x
  2. Step 2: Convert to fraction form
    89,672.70/134,446.14 = 39,725.67/x
  3. Step 3: Cross multiply
    89,672.70x = 134,446.14 × 39,725.67
  4. Step 4: Simplify right side
    89,672.70x = 5,340,962,990.41
  5. Step 5: Solve for x
    x = 5,340,962,990.41/89,672.70
  6. Step 6: Final answer
    x = 59,560.64

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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.