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Finding the Fourth Proportional to 705,682.70, 973,890.27 and 399,761.59

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Solution

The fourth proportional to 705,682.70, 973,890.27 and 399,761.59 is: 551,698.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,682.70 : 973,890.27 = 399,761.59 : x
  2. Step 2: Convert to fraction form
    705,682.70/973,890.27 = 399,761.59/x
  3. Step 3: Cross multiply
    705,682.70x = 973,890.27 × 399,761.59
  4. Step 4: Simplify right side
    705,682.70x = 389,323,920,821.92
  5. Step 5: Solve for x
    x = 389,323,920,821.92/705,682.70
  6. Step 6: Final answer
    x = 551,698.27

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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.