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Finding the Fourth Proportional to 407,714.10, 611,571.15 and 401,809.20

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Solution

The fourth proportional to 407,714.10, 611,571.15 and 401,809.20 is: 602,713.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,714.10 : 611,571.15 = 401,809.20 : x
  2. Step 2: Convert to fraction form
    407,714.10/611,571.15 = 401,809.20/x
  3. Step 3: Cross multiply
    407,714.10x = 611,571.15 × 401,809.20
  4. Step 4: Simplify right side
    407,714.10x = 245,734,914,524.58
  5. Step 5: Solve for x
    x = 245,734,914,524.58/407,714.10
  6. Step 6: Final answer
    x = 602,713.80

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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.