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Finding the Fourth Proportional to 270,495.77, 405,780.57 and 112,687.32

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Solution

The fourth proportional to 270,495.77, 405,780.57 and 112,687.32 is: 169,046.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,495.77 : 405,780.57 = 112,687.32 : x
  2. Step 2: Convert to fraction form
    270,495.77/405,780.57 = 112,687.32/x
  3. Step 3: Cross multiply
    270,495.77x = 405,780.57 × 112,687.32
  4. Step 4: Simplify right side
    270,495.77x = 45,726,324,941.37
  5. Step 5: Solve for x
    x = 45,726,324,941.37/270,495.77
  6. Step 6: Final answer
    x = 169,046.36

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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.