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Finding the Fourth Proportional to 235,777.11, 325,372.44 and 128,347.96

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Solution

The fourth proportional to 235,777.11, 325,372.44 and 128,347.96 is: 177,120.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,777.11 : 325,372.44 = 128,347.96 : x
  2. Step 2: Convert to fraction form
    235,777.11/325,372.44 = 128,347.96/x
  3. Step 3: Cross multiply
    235,777.11x = 325,372.44 × 128,347.96
  4. Step 4: Simplify right side
    235,777.11x = 41,760,887,287.36
  5. Step 5: Solve for x
    x = 41,760,887,287.36/235,777.11
  6. Step 6: Final answer
    x = 177,120.20

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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.