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Finding the Fourth Proportional to 252,808.39, 379,213.99 and 84,328.25

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Solution

The fourth proportional to 252,808.39, 379,213.99 and 84,328.25 is: 126,492.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,808.39 : 379,213.99 = 84,328.25 : x
  2. Step 2: Convert to fraction form
    252,808.39/379,213.99 = 84,328.25/x
  3. Step 3: Cross multiply
    252,808.39x = 379,213.99 × 84,328.25
  4. Step 4: Simplify right side
    252,808.39x = 31,978,452,152.22
  5. Step 5: Solve for x
    x = 31,978,452,152.22/252,808.39
  6. Step 6: Final answer
    x = 126,492.84

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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.