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Finding the Fourth Proportional to 572,861.43, 790,460.97 and 331,097.40

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Solution

The fourth proportional to 572,861.43, 790,460.97 and 331,097.40 is: 456,863.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,861.43 : 790,460.97 = 331,097.40 : x
  2. Step 2: Convert to fraction form
    572,861.43/790,460.97 = 331,097.40/x
  3. Step 3: Cross multiply
    572,861.43x = 790,460.97 × 331,097.40
  4. Step 4: Simplify right side
    572,861.43x = 261,719,571,968.48
  5. Step 5: Solve for x
    x = 261,719,571,968.48/572,861.43
  6. Step 6: Final answer
    x = 456,863.66

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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.