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Finding the Fourth Proportional to 115,459.24, 173,243.90 and 79,975.24

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Solution

The fourth proportional to 115,459.24, 173,243.90 and 79,975.24 is: 120,000.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,459.24 : 173,243.90 = 79,975.24 : x
  2. Step 2: Convert to fraction form
    115,459.24/173,243.90 = 79,975.24/x
  3. Step 3: Cross multiply
    115,459.24x = 173,243.90 × 79,975.24
  4. Step 4: Simplify right side
    115,459.24x = 13,855,222,481.04
  5. Step 5: Solve for x
    x = 13,855,222,481.04/115,459.24
  6. Step 6: Final answer
    x = 120,000.98

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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.