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Finding the Fourth Proportional to 573,027.20, 790,689.60 and 331,262.72

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Solution

The fourth proportional to 573,027.20, 790,689.60 and 331,262.72 is: 457,091.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,027.20 : 790,689.60 = 331,262.72 : x
  2. Step 2: Convert to fraction form
    573,027.20/790,689.60 = 331,262.72/x
  3. Step 3: Cross multiply
    573,027.20x = 790,689.60 × 331,262.72
  4. Step 4: Simplify right side
    573,027.20x = 261,925,987,571.71
  5. Step 5: Solve for x
    x = 261,925,987,571.71/573,027.20
  6. Step 6: Final answer
    x = 457,091.72

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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.