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Finding the Fourth Proportional to 407,714.80, 611,669.40 and 197,179.60

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Solution

The fourth proportional to 407,714.80, 611,669.40 and 197,179.60 is: 295,816.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,714.80 : 611,669.40 = 197,179.60 : x
  2. Step 2: Convert to fraction form
    407,714.80/611,669.40 = 197,179.60/x
  3. Step 3: Cross multiply
    407,714.80x = 611,669.40 × 197,179.60
  4. Step 4: Simplify right side
    407,714.80x = 120,608,727,624.24
  5. Step 5: Solve for x
    x = 120,608,727,624.24/407,714.80
  6. Step 6: Final answer
    x = 295,816.41

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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.