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Finding the Fourth Proportional to 321,358.20, 482,034.87 and 96,717.66

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Solution

The fourth proportional to 321,358.20, 482,034.87 and 96,717.66 is: 145,075.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,358.20 : 482,034.87 = 96,717.66 : x
  2. Step 2: Convert to fraction form
    321,358.20/482,034.87 = 96,717.66/x
  3. Step 3: Cross multiply
    321,358.20x = 482,034.87 × 96,717.66
  4. Step 4: Simplify right side
    321,358.20x = 46,621,284,664.80
  5. Step 5: Solve for x
    x = 46,621,284,664.80/321,358.20
  6. Step 6: Final answer
    x = 145,075.76

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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.