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Finding the Fourth Proportional to 289,035.90, 433,489.05 and 189,891.90

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Solution

The fourth proportional to 289,035.90, 433,489.05 and 189,891.90 is: 284,795.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,035.90 : 433,489.05 = 189,891.90 : x
  2. Step 2: Convert to fraction form
    289,035.90/433,489.05 = 189,891.90/x
  3. Step 3: Cross multiply
    289,035.90x = 433,489.05 × 189,891.90
  4. Step 4: Simplify right side
    289,035.90x = 82,316,059,333.70
  5. Step 5: Solve for x
    x = 82,316,059,333.70/289,035.90
  6. Step 6: Final answer
    x = 284,795.28

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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.