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Finding the Fourth Proportional to 78,995.23, 118,481.13 and 29,063.65

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Solution

The fourth proportional to 78,995.23, 118,481.13 and 29,063.65 is: 43,591.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,995.23 : 118,481.13 = 29,063.65 : x
  2. Step 2: Convert to fraction form
    78,995.23/118,481.13 = 29,063.65/x
  3. Step 3: Cross multiply
    78,995.23x = 118,481.13 × 29,063.65
  4. Step 4: Simplify right side
    78,995.23x = 3,443,494,093.92
  5. Step 5: Solve for x
    x = 3,443,494,093.92/78,995.23
  6. Step 6: Final answer
    x = 43,591.16

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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.