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Finding the Fourth Proportional to 515,249.36, 711,055.52 and 285,799.17

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Solution

The fourth proportional to 515,249.36, 711,055.52 and 285,799.17 is: 394,409.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,249.36 : 711,055.52 = 285,799.17 : x
  2. Step 2: Convert to fraction form
    515,249.36/711,055.52 = 285,799.17/x
  3. Step 3: Cross multiply
    515,249.36x = 711,055.52 × 285,799.17
  4. Step 4: Simplify right side
    515,249.36x = 203,219,076,010.92
  5. Step 5: Solve for x
    x = 203,219,076,010.92/515,249.36
  6. Step 6: Final answer
    x = 394,409.18

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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.