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Finding the Fourth Proportional to 694,983, 959,070.06 and 393,177

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Solution

The fourth proportional to 694,983, 959,070.06 and 393,177 is: 542,580.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,983 : 959,070.06 = 393,177 : x
  2. Step 2: Convert to fraction form
    694,983/959,070.06 = 393,177/x
  3. Step 3: Cross multiply
    694,983x = 959,070.06 × 393,177
  4. Step 4: Simplify right side
    694,983x = 377,084,288,980.62
  5. Step 5: Solve for x
    x = 377,084,288,980.62/694,983
  6. Step 6: Final answer
    x = 542,580.59

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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.