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Finding the Fourth Proportional to 264,626.87, 397,001.81 and 87,135.42

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Solution

The fourth proportional to 264,626.87, 397,001.81 and 87,135.42 is: 130,723.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,626.87 : 397,001.81 = 87,135.42 : x
  2. Step 2: Convert to fraction form
    264,626.87/397,001.81 = 87,135.42/x
  3. Step 3: Cross multiply
    264,626.87x = 397,001.81 × 87,135.42
  4. Step 4: Simplify right side
    264,626.87x = 34,592,919,019.43
  5. Step 5: Solve for x
    x = 34,592,919,019.43/264,626.87
  6. Step 6: Final answer
    x = 130,723.38

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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.