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Finding the Fourth Proportional to 118,936.94, 178,055.48 and 79,395.98

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Solution

The fourth proportional to 118,936.94, 178,055.48 and 79,395.98 is: 118,860.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,936.94 : 178,055.48 = 79,395.98 : x
  2. Step 2: Convert to fraction form
    118,936.94/178,055.48 = 79,395.98/x
  3. Step 3: Cross multiply
    118,936.94x = 178,055.48 × 79,395.98
  4. Step 4: Simplify right side
    118,936.94x = 14,136,889,328.97
  5. Step 5: Solve for x
    x = 14,136,889,328.97/118,936.94
  6. Step 6: Final answer
    x = 118,860.38

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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.