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Finding the Fourth Proportional to 328,558.44, 492,838.14 and 79,240.44

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Solution

The fourth proportional to 328,558.44, 492,838.14 and 79,240.44 is: 118,860.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,558.44 : 492,838.14 = 79,240.44 : x
  2. Step 2: Convert to fraction form
    328,558.44/492,838.14 = 79,240.44/x
  3. Step 3: Cross multiply
    328,558.44x = 492,838.14 × 79,240.44
  4. Step 4: Simplify right side
    328,558.44x = 39,052,711,062.38
  5. Step 5: Solve for x
    x = 39,052,711,062.38/328,558.44
  6. Step 6: Final answer
    x = 118,860.78

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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.