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Finding the Fourth Proportional to 321,236.76, 443,300.12 and 177,995.55

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Solution

The fourth proportional to 321,236.76, 443,300.12 and 177,995.55 is: 245,630.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,236.76 : 443,300.12 = 177,995.55 : x
  2. Step 2: Convert to fraction form
    321,236.76/443,300.12 = 177,995.55/x
  3. Step 3: Cross multiply
    321,236.76x = 443,300.12 × 177,995.55
  4. Step 4: Simplify right side
    321,236.76x = 78,905,450,114.35
  5. Step 5: Solve for x
    x = 78,905,450,114.35/321,236.76
  6. Step 6: Final answer
    x = 245,630.20

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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.