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Finding the Fourth Proportional to 43,940.58, 65,910.63 and 10,660.65

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Solution

The fourth proportional to 43,940.58, 65,910.63 and 10,660.65 is: 15,990.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,940.58 : 65,910.63 = 10,660.65 : x
  2. Step 2: Convert to fraction form
    43,940.58/65,910.63 = 10,660.65/x
  3. Step 3: Cross multiply
    43,940.58x = 65,910.63 × 10,660.65
  4. Step 4: Simplify right side
    43,940.58x = 702,650,157.71
  5. Step 5: Solve for x
    x = 702,650,157.71/43,940.58
  6. Step 6: Final answer
    x = 15,990.92

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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.