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Finding the Fourth Proportional to 321,996.71, 483,216.53 and 111,634.65

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Solution

The fourth proportional to 321,996.71, 483,216.53 and 111,634.65 is: 167,528.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,996.71 : 483,216.53 = 111,634.65 : x
  2. Step 2: Convert to fraction form
    321,996.71/483,216.53 = 111,634.65/x
  3. Step 3: Cross multiply
    321,996.71x = 483,216.53 × 111,634.65
  4. Step 4: Simplify right side
    321,996.71x = 53,943,707,642.59
  5. Step 5: Solve for x
    x = 53,943,707,642.59/321,996.71
  6. Step 6: Final answer
    x = 167,528.75

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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.