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Finding the Fourth Proportional to 603,605, 832,974.66 and 331,690.43

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Solution

The fourth proportional to 603,605, 832,974.66 and 331,690.43 is: 457,732.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,605 : 832,974.66 = 331,690.43 : x
  2. Step 2: Convert to fraction form
    603,605/832,974.66 = 331,690.43/x
  3. Step 3: Cross multiply
    603,605x = 832,974.66 × 331,690.43
  4. Step 4: Simplify right side
    603,605x = 276,289,723,154.50
  5. Step 5: Solve for x
    x = 276,289,723,154.50/603,605
  6. Step 6: Final answer
    x = 457,732.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.