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Finding the Fourth Proportional to 321,045.27, 443,042.28 and 177,805.17

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Solution

The fourth proportional to 321,045.27, 443,042.28 and 177,805.17 is: 245,371.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,045.27 : 443,042.28 = 177,805.17 : x
  2. Step 2: Convert to fraction form
    321,045.27/443,042.28 = 177,805.17/x
  3. Step 3: Cross multiply
    321,045.27x = 443,042.28 × 177,805.17
  4. Step 4: Simplify right side
    321,045.27x = 78,775,207,912.59
  5. Step 5: Solve for x
    x = 78,775,207,912.59/321,045.27
  6. Step 6: Final answer
    x = 245,371.03

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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.