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Finding the Fourth Proportional to 447,326.37, 617,327.37 and 256,376.61

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Solution

The fourth proportional to 447,326.37, 617,327.37 and 256,376.61 is: 353,809.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,326.37 : 617,327.37 = 256,376.61 : x
  2. Step 2: Convert to fraction form
    447,326.37/617,327.37 = 256,376.61/x
  3. Step 3: Cross multiply
    447,326.37x = 617,327.37 × 256,376.61
  4. Step 4: Simplify right side
    447,326.37x = 158,268,298,380.82
  5. Step 5: Solve for x
    x = 158,268,298,380.82/447,326.37
  6. Step 6: Final answer
    x = 353,809.45

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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.