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Finding the Fourth Proportional to 118,855.90, 178,274.87 and 43,941.02

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Solution

The fourth proportional to 118,855.90, 178,274.87 and 43,941.02 is: 65,908.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,855.90 : 178,274.87 = 43,941.02 : x
  2. Step 2: Convert to fraction form
    118,855.90/178,274.87 = 43,941.02/x
  3. Step 3: Cross multiply
    118,855.90x = 178,274.87 × 43,941.02
  4. Step 4: Simplify right side
    118,855.90x = 7,833,579,408.46
  5. Step 5: Solve for x
    x = 7,833,579,408.46/118,855.90
  6. Step 6: Final answer
    x = 65,908.21

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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.