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Finding the Fourth Proportional to 73,720.88, 110,581.31 and 18,316.88

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Solution

The fourth proportional to 73,720.88, 110,581.31 and 18,316.88 is: 27,475.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,720.88 : 110,581.31 = 18,316.88 : x
  2. Step 2: Convert to fraction form
    73,720.88/110,581.31 = 18,316.88/x
  3. Step 3: Cross multiply
    73,720.88x = 110,581.31 × 18,316.88
  4. Step 4: Simplify right side
    73,720.88x = 2,025,504,078.40
  5. Step 5: Solve for x
    x = 2,025,504,078.40/73,720.88
  6. Step 6: Final answer
    x = 27,475.31

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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.