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Finding the Fourth Proportional to 79,527.41, 109,749.36 and 43,720.75

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Solution

The fourth proportional to 79,527.41, 109,749.36 and 43,720.75 is: 60,335.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,527.41 : 109,749.36 = 43,720.75 : x
  2. Step 2: Convert to fraction form
    79,527.41/109,749.36 = 43,720.75/x
  3. Step 3: Cross multiply
    79,527.41x = 109,749.36 × 43,720.75
  4. Step 4: Simplify right side
    79,527.41x = 4,798,324,331.22
  5. Step 5: Solve for x
    x = 4,798,324,331.22/79,527.41
  6. Step 6: Final answer
    x = 60,335.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.