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Finding the Fourth Proportional to 405,739.15, 608,664.11 and 169,026.48

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Solution

The fourth proportional to 405,739.15, 608,664.11 and 169,026.48 is: 253,562.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,739.15 : 608,664.11 = 169,026.48 : x
  2. Step 2: Convert to fraction form
    405,739.15/608,664.11 = 169,026.48/x
  3. Step 3: Cross multiply
    405,739.15x = 608,664.11 × 169,026.48
  4. Step 4: Simplify right side
    405,739.15x = 102,880,351,170.50
  5. Step 5: Solve for x
    x = 102,880,351,170.50/405,739.15
  6. Step 6: Final answer
    x = 253,562.79

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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.