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Finding the Fourth Proportional to 636,933.12, 878,991.89 and 365,053.48

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Solution

The fourth proportional to 636,933.12, 878,991.89 and 365,053.48 is: 503,787.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,933.12 : 878,991.89 = 365,053.48 : x
  2. Step 2: Convert to fraction form
    636,933.12/878,991.89 = 365,053.48/x
  3. Step 3: Cross multiply
    636,933.12x = 878,991.89 × 365,053.48
  4. Step 4: Simplify right side
    636,933.12x = 320,879,048,336.28
  5. Step 5: Solve for x
    x = 320,879,048,336.28/636,933.12
  6. Step 6: Final answer
    x = 503,787.66

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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.