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Finding the Fourth Proportional to 123,424.67, 170,324.84 and 66,835.07

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Solution

The fourth proportional to 123,424.67, 170,324.84 and 66,835.07 is: 92,231.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,424.67 : 170,324.84 = 66,835.07 : x
  2. Step 2: Convert to fraction form
    123,424.67/170,324.84 = 66,835.07/x
  3. Step 3: Cross multiply
    123,424.67x = 170,324.84 × 66,835.07
  4. Step 4: Simplify right side
    123,424.67x = 11,383,672,269.96
  5. Step 5: Solve for x
    x = 11,383,672,269.96/123,424.67
  6. Step 6: Final answer
    x = 92,231.74

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1.5x scale

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.