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Finding the Fourth Proportional to 695,104.50, 959,258.79 and 393,298.50

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Solution

The fourth proportional to 695,104.50, 959,258.79 and 393,298.50 is: 542,760.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,104.50 : 959,258.79 = 393,298.50 : x
  2. Step 2: Convert to fraction form
    695,104.50/959,258.79 = 393,298.50/x
  3. Step 3: Cross multiply
    695,104.50x = 959,258.79 × 393,298.50
  4. Step 4: Simplify right side
    695,104.50x = 377,275,043,218.82
  5. Step 5: Solve for x
    x = 377,275,043,218.82/695,104.50
  6. Step 6: Final answer
    x = 542,760.18

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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.