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Finding the Fourth Proportional to 572,781.49, 790,350.67 and 331,017.41

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Solution

The fourth proportional to 572,781.49, 790,350.67 and 331,017.41 is: 456,753.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,781.49 : 790,350.67 = 331,017.41 : x
  2. Step 2: Convert to fraction form
    572,781.49/790,350.67 = 331,017.41/x
  3. Step 3: Cross multiply
    572,781.49x = 790,350.67 × 331,017.41
  4. Step 4: Simplify right side
    572,781.49x = 261,619,831,775.17
  5. Step 5: Solve for x
    x = 261,619,831,775.17/572,781.49
  6. Step 6: Final answer
    x = 456,753.29

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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.