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Finding the Fourth Proportional to 144,489.76, 199,396.04 and 79,961.67

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Solution

The fourth proportional to 144,489.76, 199,396.04 and 79,961.67 is: 110,347.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,489.76 : 199,396.04 = 79,961.67 : x
  2. Step 2: Convert to fraction form
    144,489.76/199,396.04 = 79,961.67/x
  3. Step 3: Cross multiply
    144,489.76x = 199,396.04 × 79,961.67
  4. Step 4: Simplify right side
    144,489.76x = 15,944,040,349.79
  5. Step 5: Solve for x
    x = 15,944,040,349.79/144,489.76
  6. Step 6: Final answer
    x = 110,347.20

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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.