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Finding the Fourth Proportional to 695,414.16, 959,659.92 and 389,487.96

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Solution

The fourth proportional to 695,414.16, 959,659.92 and 389,487.96 is: 537,486.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,414.16 : 959,659.92 = 389,487.96 : x
  2. Step 2: Convert to fraction form
    695,414.16/959,659.92 = 389,487.96/x
  3. Step 3: Cross multiply
    695,414.16x = 959,659.92 × 389,487.96
  4. Step 4: Simplify right side
    695,414.16x = 373,775,984,534.56
  5. Step 5: Solve for x
    x = 373,775,984,534.56/695,414.16
  6. Step 6: Final answer
    x = 537,486.88

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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.