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Finding the Fourth Proportional to 117,858.96, 176,771.82 and 61,680.60

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Solution

The fourth proportional to 117,858.96, 176,771.82 and 61,680.60 is: 92,512.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,858.96 : 176,771.82 = 61,680.60 : x
  2. Step 2: Convert to fraction form
    117,858.96/176,771.82 = 61,680.60/x
  3. Step 3: Cross multiply
    117,858.96x = 176,771.82 × 61,680.60
  4. Step 4: Simplify right side
    117,858.96x = 10,903,391,920.69
  5. Step 5: Solve for x
    x = 10,903,391,920.69/117,858.96
  6. Step 6: Final answer
    x = 92,512.20

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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.