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Finding the Fourth Proportional to 363,995.10, 545,992.65 and 331,335.90

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Solution

The fourth proportional to 363,995.10, 545,992.65 and 331,335.90 is: 497,003.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,995.10 : 545,992.65 = 331,335.90 : x
  2. Step 2: Convert to fraction form
    363,995.10/545,992.65 = 331,335.90/x
  3. Step 3: Cross multiply
    363,995.10x = 545,992.65 × 331,335.90
  4. Step 4: Simplify right side
    363,995.10x = 180,906,966,081.14
  5. Step 5: Solve for x
    x = 180,906,966,081.14/363,995.10
  6. Step 6: Final answer
    x = 497,003.85

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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.