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Finding the Fourth Proportional to 321,101.48, 443,134.63 and 177,861.51

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Solution

The fourth proportional to 321,101.48, 443,134.63 and 177,861.51 is: 245,456.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,101.48 : 443,134.63 = 177,861.51 : x
  2. Step 2: Convert to fraction form
    321,101.48/443,134.63 = 177,861.51/x
  3. Step 3: Cross multiply
    321,101.48x = 443,134.63 × 177,861.51
  4. Step 4: Simplify right side
    321,101.48x = 78,816,594,425.09
  5. Step 5: Solve for x
    x = 78,816,594,425.09/321,101.48
  6. Step 6: Final answer
    x = 245,456.96

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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.