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Finding the Fourth Proportional to 220,595.12, 330,861.44 and 70,815.69

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Solution

The fourth proportional to 220,595.12, 330,861.44 and 70,815.69 is: 106,213.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,595.12 : 330,861.44 = 70,815.69 : x
  2. Step 2: Convert to fraction form
    220,595.12/330,861.44 = 70,815.69/x
  3. Step 3: Cross multiply
    220,595.12x = 330,861.44 × 70,815.69
  4. Step 4: Simplify right side
    220,595.12x = 23,430,181,167.99
  5. Step 5: Solve for x
    x = 23,430,181,167.99/220,595.12
  6. Step 6: Final answer
    x = 106,213.51

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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.