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Finding the Fourth Proportional to 455,956.87, 683,949.25 and 156,433.25

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Solution

The fourth proportional to 455,956.87, 683,949.25 and 156,433.25 is: 234,654.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,956.87 : 683,949.25 = 156,433.25 : x
  2. Step 2: Convert to fraction form
    455,956.87/683,949.25 = 156,433.25/x
  3. Step 3: Cross multiply
    455,956.87x = 683,949.25 × 156,433.25
  4. Step 4: Simplify right side
    455,956.87x = 106,992,404,012.56
  5. Step 5: Solve for x
    x = 106,992,404,012.56/455,956.87
  6. Step 6: Final answer
    x = 234,654.66

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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.