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Finding the Fourth Proportional to 916,489.92, 1,374,757.92 and 251,640

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Solution

The fourth proportional to 916,489.92, 1,374,757.92 and 251,640 is: 377,466.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,489.92 : 1,374,757.92 = 251,640 : x
  2. Step 2: Convert to fraction form
    916,489.92/1,374,757.92 = 251,640/x
  3. Step 3: Cross multiply
    916,489.92x = 1,374,757.92 × 251,640
  4. Step 4: Simplify right side
    916,489.92x = 345,944,082,988.80
  5. Step 5: Solve for x
    x = 345,944,082,988.80/916,489.92
  6. Step 6: Final answer
    x = 377,466.33

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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.