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Finding the Fourth Proportional to 405,714.68, 608,921.94 and 156,571.64

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Solution

The fourth proportional to 405,714.68, 608,921.94 and 156,571.64 is: 234,992.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,714.68 : 608,921.94 = 156,571.64 : x
  2. Step 2: Convert to fraction form
    405,714.68/608,921.94 = 156,571.64/x
  3. Step 3: Cross multiply
    405,714.68x = 608,921.94 × 156,571.64
  4. Step 4: Simplify right side
    405,714.68x = 95,339,906,777.78
  5. Step 5: Solve for x
    x = 95,339,906,777.78/405,714.68
  6. Step 6: Final answer
    x = 234,992.50

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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.