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Finding the Fourth Proportional to 118,885.86, 164,020.46 and 67,861.79

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Solution

The fourth proportional to 118,885.86, 164,020.46 and 67,861.79 is: 93,625.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,885.86 : 164,020.46 = 67,861.79 : x
  2. Step 2: Convert to fraction form
    118,885.86/164,020.46 = 67,861.79/x
  3. Step 3: Cross multiply
    118,885.86x = 164,020.46 × 67,861.79
  4. Step 4: Simplify right side
    118,885.86x = 11,130,722,012.22
  5. Step 5: Solve for x
    x = 11,130,722,012.22/118,885.86
  6. Step 6: Final answer
    x = 93,625.28

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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.