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Finding the Fourth Proportional to 455,618.34, 683,482.20 and 189,558.84

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Solution

The fourth proportional to 455,618.34, 683,482.20 and 189,558.84 is: 284,361.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,618.34 : 683,482.20 = 189,558.84 : x
  2. Step 2: Convert to fraction form
    455,618.34/683,482.20 = 189,558.84/x
  3. Step 3: Cross multiply
    455,618.34x = 683,482.20 × 189,558.84
  4. Step 4: Simplify right side
    455,618.34x = 129,560,092,992.65
  5. Step 5: Solve for x
    x = 129,560,092,992.65/455,618.34
  6. Step 6: Final answer
    x = 284,361.01

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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.