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Finding the Fourth Proportional to 424,722.85, 637,083.61 and 291,198.31

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Solution

The fourth proportional to 424,722.85, 637,083.61 and 291,198.31 is: 436,797.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,722.85 : 637,083.61 = 291,198.31 : x
  2. Step 2: Convert to fraction form
    424,722.85/637,083.61 = 291,198.31/x
  3. Step 3: Cross multiply
    424,722.85x = 637,083.61 × 291,198.31
  4. Step 4: Simplify right side
    424,722.85x = 185,517,670,560.70
  5. Step 5: Solve for x
    x = 185,517,670,560.70/424,722.85
  6. Step 6: Final answer
    x = 436,797.01

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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.