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Finding the Fourth Proportional to 572,711.45, 790,246.94 and 331,016.56

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Solution

The fourth proportional to 572,711.45, 790,246.94 and 331,016.56 is: 456,748.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,711.45 : 790,246.94 = 331,016.56 : x
  2. Step 2: Convert to fraction form
    572,711.45/790,246.94 = 331,016.56/x
  3. Step 3: Cross multiply
    572,711.45x = 790,246.94 × 331,016.56
  4. Step 4: Simplify right side
    572,711.45x = 261,584,819,998.63
  5. Step 5: Solve for x
    x = 261,584,819,998.63/572,711.45
  6. Step 6: Final answer
    x = 456,748.02

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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.