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Finding the Fourth Proportional to 625,896,164.67, 863,693,500.77 and 347,415,766.26

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Solution

The fourth proportional to 625,896,164.67, 863,693,500.77 and 347,415,766.26 is: 479,409,774.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,896,164.67 : 863,693,500.77 = 347,415,766.26 : x
  2. Step 2: Convert to fraction form
    625,896,164.67/863,693,500.77 = 347,415,766.26/x
  3. Step 3: Cross multiply
    625,896,164.67x = 863,693,500.77 × 347,415,766.26
  4. Step 4: Simplify right side
    625,896,164.67x = 300,060,739,383,791,424
  5. Step 5: Solve for x
    x = 300,060,739,383,791,424/625,896,164.67
  6. Step 6: Final answer
    x = 479,409,774.85

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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.