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Finding the Fourth Proportional to 667,156.74, 920,676.73 and 361,233.33

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Solution

The fourth proportional to 667,156.74, 920,676.73 and 361,233.33 is: 498,502.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,156.74 : 920,676.73 = 361,233.33 : x
  2. Step 2: Convert to fraction form
    667,156.74/920,676.73 = 361,233.33/x
  3. Step 3: Cross multiply
    667,156.74x = 920,676.73 × 361,233.33
  4. Step 4: Simplify right side
    667,156.74x = 332,579,121,031.41
  5. Step 5: Solve for x
    x = 332,579,121,031.41/667,156.74
  6. Step 6: Final answer
    x = 498,502.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.