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Finding the Fourth Proportional to 47,396.70, 71,200.65 and 39,620.70

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Solution

The fourth proportional to 47,396.70, 71,200.65 and 39,620.70 is: 59,519.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,396.70 : 71,200.65 = 39,620.70 : x
  2. Step 2: Convert to fraction form
    47,396.70/71,200.65 = 39,620.70/x
  3. Step 3: Cross multiply
    47,396.70x = 71,200.65 × 39,620.70
  4. Step 4: Simplify right side
    47,396.70x = 2,821,019,593.46
  5. Step 5: Solve for x
    x = 2,821,019,593.46/47,396.70
  6. Step 6: Final answer
    x = 59,519.33

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1.5x scale

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.