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Finding the Fourth Proportional to 449,221.61, 671,785.74 and 335,449.31

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Solution

The fourth proportional to 449,221.61, 671,785.74 and 335,449.31 is: 501,645.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,221.61 : 671,785.74 = 335,449.31 : x
  2. Step 2: Convert to fraction form
    449,221.61/671,785.74 = 335,449.31/x
  3. Step 3: Cross multiply
    449,221.61x = 671,785.74 × 335,449.31
  4. Step 4: Simplify right side
    449,221.61x = 225,350,062,950.84
  5. Step 5: Solve for x
    x = 225,350,062,950.84/449,221.61
  6. Step 6: Final answer
    x = 501,645.64

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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.