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Finding the Fourth Proportional to 173,955.65, 260,902.65 and 79,163.78

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Solution

The fourth proportional to 173,955.65, 260,902.65 and 79,163.78 is: 118,731.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,955.65 : 260,902.65 = 79,163.78 : x
  2. Step 2: Convert to fraction form
    173,955.65/260,902.65 = 79,163.78/x
  3. Step 3: Cross multiply
    173,955.65x = 260,902.65 × 79,163.78
  4. Step 4: Simplify right side
    173,955.65x = 20,654,039,778.00
  5. Step 5: Solve for x
    x = 20,654,039,778.00/173,955.65
  6. Step 6: Final answer
    x = 118,731.64

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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.