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Finding the Fourth Proportional to 440,739.86, 608,212.31 and 257,012.69

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Solution

The fourth proportional to 440,739.86, 608,212.31 and 257,012.69 is: 354,672.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,739.86 : 608,212.31 = 257,012.69 : x
  2. Step 2: Convert to fraction form
    440,739.86/608,212.31 = 257,012.69/x
  3. Step 3: Cross multiply
    440,739.86x = 608,212.31 × 257,012.69
  4. Step 4: Simplify right side
    440,739.86x = 156,318,284,047.28
  5. Step 5: Solve for x
    x = 156,318,284,047.28/440,739.86
  6. Step 6: Final answer
    x = 354,672.44

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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.