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Finding the Fourth Proportional to 395,767.20, 594,039.60 and 196,312.80

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Solution

The fourth proportional to 395,767.20, 594,039.60 and 196,312.80 is: 294,662.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,767.20 : 594,039.60 = 196,312.80 : x
  2. Step 2: Convert to fraction form
    395,767.20/594,039.60 = 196,312.80/x
  3. Step 3: Cross multiply
    395,767.20x = 594,039.60 × 196,312.80
  4. Step 4: Simplify right side
    395,767.20x = 116,617,577,186.88
  5. Step 5: Solve for x
    x = 116,617,577,186.88/395,767.20
  6. Step 6: Final answer
    x = 294,662.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.