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Finding the Fourth Proportional to 331,763.10, 497,644.65 and 82,445.10

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Solution

The fourth proportional to 331,763.10, 497,644.65 and 82,445.10 is: 123,667.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,763.10 : 497,644.65 = 82,445.10 : x
  2. Step 2: Convert to fraction form
    331,763.10/497,644.65 = 82,445.10/x
  3. Step 3: Cross multiply
    331,763.10x = 497,644.65 × 82,445.10
  4. Step 4: Simplify right side
    331,763.10x = 41,028,362,933.72
  5. Step 5: Solve for x
    x = 41,028,362,933.72/331,763.10
  6. Step 6: Final answer
    x = 123,667.65

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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.