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Finding the Fourth Proportional to 331,440.80, 497,161.20 and 331,440.80

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Solution

The fourth proportional to 331,440.80, 497,161.20 and 331,440.80 is: 497,161.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,440.80 : 497,161.20 = 331,440.80 : x
  2. Step 2: Convert to fraction form
    331,440.80/497,161.20 = 331,440.80/x
  3. Step 3: Cross multiply
    331,440.80x = 497,161.20 × 331,440.80
  4. Step 4: Simplify right side
    331,440.80x = 164,779,505,856.96
  5. Step 5: Solve for x
    x = 164,779,505,856.96/331,440.80
  6. Step 6: Final answer
    x = 497,161.20

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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.