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Finding the Fourth Proportional to 118,942.48, 164,147.88 and 68,644.72

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Solution

The fourth proportional to 118,942.48, 164,147.88 and 68,644.72 is: 94,733.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,942.48 : 164,147.88 = 68,644.72 : x
  2. Step 2: Convert to fraction form
    118,942.48/164,147.88 = 68,644.72/x
  3. Step 3: Cross multiply
    118,942.48x = 164,147.88 × 68,644.72
  4. Step 4: Simplify right side
    118,942.48x = 11,267,885,261.19
  5. Step 5: Solve for x
    x = 11,267,885,261.19/118,942.48
  6. Step 6: Final answer
    x = 94,733.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.