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Finding the Fourth Proportional to 235,986.32, 325,652.91 and 128,553.59

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Solution

The fourth proportional to 235,986.32, 325,652.91 and 128,553.59 is: 177,399.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,986.32 : 325,652.91 = 128,553.59 : x
  2. Step 2: Convert to fraction form
    235,986.32/325,652.91 = 128,553.59/x
  3. Step 3: Cross multiply
    235,986.32x = 325,652.91 × 128,553.59
  4. Step 4: Simplify right side
    235,986.32x = 41,863,850,674.45
  5. Step 5: Solve for x
    x = 41,863,850,674.45/235,986.32
  6. Step 6: Final answer
    x = 177,399.48

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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.