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Finding the Fourth Proportional to 172,383.56, 258,397 and 65,738.84

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Solution

The fourth proportional to 172,383.56, 258,397 and 65,738.84 is: 98,540.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,383.56 : 258,397 = 65,738.84 : x
  2. Step 2: Convert to fraction form
    172,383.56/258,397 = 65,738.84/x
  3. Step 3: Cross multiply
    172,383.56x = 258,397 × 65,738.84
  4. Step 4: Simplify right side
    172,383.56x = 16,986,719,039.48
  5. Step 5: Solve for x
    x = 16,986,719,039.48/172,383.56
  6. Step 6: Final answer
    x = 98,540.25

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1.5x scale

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.