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Finding the Fourth Proportional to 123,609.22, 170,579.19 and 67,020.46

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Solution

The fourth proportional to 123,609.22, 170,579.19 and 67,020.46 is: 92,487.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,609.22 : 170,579.19 = 67,020.46 : x
  2. Step 2: Convert to fraction form
    123,609.22/170,579.19 = 67,020.46/x
  3. Step 3: Cross multiply
    123,609.22x = 170,579.19 × 67,020.46
  4. Step 4: Simplify right side
    123,609.22x = 11,432,295,780.23
  5. Step 5: Solve for x
    x = 11,432,295,780.23/123,609.22
  6. Step 6: Final answer
    x = 92,487.40

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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.