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Finding the Fourth Proportional to 321,795.27, 482,770.92 and 97,142.28

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Solution

The fourth proportional to 321,795.27, 482,770.92 and 97,142.28 is: 145,736.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,795.27 : 482,770.92 = 97,142.28 : x
  2. Step 2: Convert to fraction form
    321,795.27/482,770.92 = 97,142.28/x
  3. Step 3: Cross multiply
    321,795.27x = 482,770.92 × 97,142.28
  4. Step 4: Simplify right side
    321,795.27x = 46,897,467,886.50
  5. Step 5: Solve for x
    x = 46,897,467,886.50/321,795.27
  6. Step 6: Final answer
    x = 145,736.97

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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.