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Finding the Fourth Proportional to 515,254.98, 711,093.15 and 285,834.90

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Solution

The fourth proportional to 515,254.98, 711,093.15 and 285,834.90 is: 394,475.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,254.98 : 711,093.15 = 285,834.90 : x
  2. Step 2: Convert to fraction form
    515,254.98/711,093.15 = 285,834.90/x
  3. Step 3: Cross multiply
    515,254.98x = 711,093.15 × 285,834.90
  4. Step 4: Simplify right side
    515,254.98x = 203,255,239,420.94
  5. Step 5: Solve for x
    x = 203,255,239,420.94/515,254.98
  6. Step 6: Final answer
    x = 394,475.06

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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.