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Finding the Fourth Proportional to 321,961.99, 482,943 and 111,599.92

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Solution

The fourth proportional to 321,961.99, 482,943 and 111,599.92 is: 167,399.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,961.99 : 482,943 = 111,599.92 : x
  2. Step 2: Convert to fraction form
    321,961.99/482,943 = 111,599.92/x
  3. Step 3: Cross multiply
    321,961.99x = 482,943 × 111,599.92
  4. Step 4: Simplify right side
    321,961.99x = 53,896,400,164.56
  5. Step 5: Solve for x
    x = 53,896,400,164.56/321,961.99
  6. Step 6: Final answer
    x = 167,399.89

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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.