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Finding the Fourth Proportional to 667,507.77, 1,001,323.17 and 218,231.01

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Solution

The fourth proportional to 667,507.77, 1,001,323.17 and 218,231.01 is: 327,366.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,507.77 : 1,001,323.17 = 218,231.01 : x
  2. Step 2: Convert to fraction form
    667,507.77/1,001,323.17 = 218,231.01/x
  3. Step 3: Cross multiply
    667,507.77x = 1,001,323.17 × 218,231.01
  4. Step 4: Simplify right side
    667,507.77x = 218,519,766,725.50
  5. Step 5: Solve for x
    x = 218,519,766,725.50/667,507.77
  6. Step 6: Final answer
    x = 327,366.63

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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.