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Finding the Fourth Proportional to 71,213.20, 106,819.80 and 59,635.60

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Solution

The fourth proportional to 71,213.20, 106,819.80 and 59,635.60 is: 89,453.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,213.20 : 106,819.80 = 59,635.60 : x
  2. Step 2: Convert to fraction form
    71,213.20/106,819.80 = 59,635.60/x
  3. Step 3: Cross multiply
    71,213.20x = 106,819.80 × 59,635.60
  4. Step 4: Simplify right side
    71,213.20x = 6,370,262,864.88
  5. Step 5: Solve for x
    x = 6,370,262,864.88/71,213.20
  6. Step 6: Final answer
    x = 89,453.40

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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.