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Finding the Fourth Proportional to 59,889.80, 89,834.70 and 53,438.60

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Solution

The fourth proportional to 59,889.80, 89,834.70 and 53,438.60 is: 80,157.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,889.80 : 89,834.70 = 53,438.60 : x
  2. Step 2: Convert to fraction form
    59,889.80/89,834.70 = 53,438.60/x
  3. Step 3: Cross multiply
    59,889.80x = 89,834.70 × 53,438.60
  4. Step 4: Simplify right side
    59,889.80x = 4,800,640,599.42
  5. Step 5: Solve for x
    x = 4,800,640,599.42/59,889.80
  6. Step 6: Final answer
    x = 80,157.90

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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.