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Finding the Fourth Proportional to 321,211.56, 443,257.02 and 176,016.48

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Solution

The fourth proportional to 321,211.56, 443,257.02 and 176,016.48 is: 242,894.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,211.56 : 443,257.02 = 176,016.48 : x
  2. Step 2: Convert to fraction form
    321,211.56/443,257.02 = 176,016.48/x
  3. Step 3: Cross multiply
    321,211.56x = 443,257.02 × 176,016.48
  4. Step 4: Simplify right side
    321,211.56x = 78,020,540,395.69
  5. Step 5: Solve for x
    x = 78,020,540,395.69/321,211.56
  6. Step 6: Final answer
    x = 242,894.56

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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.