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Finding the Fourth Proportional to 391,026.68, 586,550.20 and 124,786.84

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Solution

The fourth proportional to 391,026.68, 586,550.20 and 124,786.84 is: 187,183.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,026.68 : 586,550.20 = 124,786.84 : x
  2. Step 2: Convert to fraction form
    391,026.68/586,550.20 = 124,786.84/x
  3. Step 3: Cross multiply
    391,026.68x = 586,550.20 × 124,786.84
  4. Step 4: Simplify right side
    391,026.68x = 73,193,745,959.37
  5. Step 5: Solve for x
    x = 73,193,745,959.37/391,026.68
  6. Step 6: Final answer
    x = 187,183.51

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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.