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Finding the Fourth Proportional to 321,998.39, 444,378.35 and 186,057.20

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Solution

The fourth proportional to 321,998.39, 444,378.35 and 186,057.20 is: 256,770.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,998.39 : 444,378.35 = 186,057.20 : x
  2. Step 2: Convert to fraction form
    321,998.39/444,378.35 = 186,057.20/x
  3. Step 3: Cross multiply
    321,998.39x = 444,378.35 × 186,057.20
  4. Step 4: Simplify right side
    321,998.39x = 82,679,793,117.71
  5. Step 5: Solve for x
    x = 82,679,793,117.71/321,998.39
  6. Step 6: Final answer
    x = 256,770.83

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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.