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Finding the Fourth Proportional to 636,664.44, 878,721.73 and 364,914.47

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Solution

The fourth proportional to 636,664.44, 878,721.73 and 364,914.47 is: 503,653.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,664.44 : 878,721.73 = 364,914.47 : x
  2. Step 2: Convert to fraction form
    636,664.44/878,721.73 = 364,914.47/x
  3. Step 3: Cross multiply
    636,664.44x = 878,721.73 × 364,914.47
  4. Step 4: Simplify right side
    636,664.44x = 320,658,274,380.43
  5. Step 5: Solve for x
    x = 320,658,274,380.43/636,664.44
  6. Step 6: Final answer
    x = 503,653.50

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1.5x scale

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.