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Finding the Fourth Proportional to 172,221.12, 237,669.12 and 96,770.88

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Solution

The fourth proportional to 172,221.12, 237,669.12 and 96,770.88 is: 133,546.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,221.12 : 237,669.12 = 96,770.88 : x
  2. Step 2: Convert to fraction form
    172,221.12/237,669.12 = 96,770.88/x
  3. Step 3: Cross multiply
    172,221.12x = 237,669.12 × 96,770.88
  4. Step 4: Simplify right side
    172,221.12x = 22,999,449,891.23
  5. Step 5: Solve for x
    x = 22,999,449,891.23/172,221.12
  6. Step 6: Final answer
    x = 133,546.05

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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.