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Finding the Fourth Proportional to 79,479.81, 119,238.18 and 23,317.65

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Solution

The fourth proportional to 79,479.81, 119,238.18 and 23,317.65 is: 34,981.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,479.81 : 119,238.18 = 23,317.65 : x
  2. Step 2: Convert to fraction form
    79,479.81/119,238.18 = 23,317.65/x
  3. Step 3: Cross multiply
    79,479.81x = 119,238.18 × 23,317.65
  4. Step 4: Simplify right side
    79,479.81x = 2,780,354,147.88
  5. Step 5: Solve for x
    x = 2,780,354,147.88/79,479.81
  6. Step 6: Final answer
    x = 34,981.89

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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.