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Finding the Fourth Proportional to 89,696.67, 122,885.04 and 86,333.55

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Solution

The fourth proportional to 89,696.67, 122,885.04 and 86,333.55 is: 118,277.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,696.67 : 122,885.04 = 86,333.55 : x
  2. Step 2: Convert to fraction form
    89,696.67/122,885.04 = 86,333.55/x
  3. Step 3: Cross multiply
    89,696.67x = 122,885.04 × 86,333.55
  4. Step 4: Simplify right side
    89,696.67x = 10,609,101,745.09
  5. Step 5: Solve for x
    x = 10,609,101,745.09/89,696.67
  6. Step 6: Final answer
    x = 118,277.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.