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Finding the Fourth Proportional to 43,959.79, 65,751.29 and 40,768.99

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Solution

The fourth proportional to 43,959.79, 65,751.29 and 40,768.99 is: 60,978.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,959.79 : 65,751.29 = 40,768.99 : x
  2. Step 2: Convert to fraction form
    43,959.79/65,751.29 = 40,768.99/x
  3. Step 3: Cross multiply
    43,959.79x = 65,751.29 × 40,768.99
  4. Step 4: Simplify right side
    43,959.79x = 2,680,613,151.90
  5. Step 5: Solve for x
    x = 2,680,613,151.90/43,959.79
  6. Step 6: Final answer
    x = 60,978.76

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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.