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Finding the Fourth Proportional to 64,987.10, 97,517.10 and 27,540.80

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Solution

The fourth proportional to 64,987.10, 97,517.10 and 27,540.80 is: 41,326.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,987.10 : 97,517.10 = 27,540.80 : x
  2. Step 2: Convert to fraction form
    64,987.10/97,517.10 = 27,540.80/x
  3. Step 3: Cross multiply
    64,987.10x = 97,517.10 × 27,540.80
  4. Step 4: Simplify right side
    64,987.10x = 2,685,698,947.68
  5. Step 5: Solve for x
    x = 2,685,698,947.68/64,987.10
  6. Step 6: Final answer
    x = 41,326.65

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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.