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Finding the Fourth Proportional to 75,174.48, 103,739.40 and 43,344.72

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Solution

The fourth proportional to 75,174.48, 103,739.40 and 43,344.72 is: 59,814.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,174.48 : 103,739.40 = 43,344.72 : x
  2. Step 2: Convert to fraction form
    75,174.48/103,739.40 = 43,344.72/x
  3. Step 3: Cross multiply
    75,174.48x = 103,739.40 × 43,344.72
  4. Step 4: Simplify right side
    75,174.48x = 4,496,555,245.97
  5. Step 5: Solve for x
    x = 4,496,555,245.97/75,174.48
  6. Step 6: Final answer
    x = 59,814.92

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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.