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Finding the Fourth Proportional to 325,765.45, 487,982.95 and 167,661.75

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Solution

The fourth proportional to 325,765.45, 487,982.95 and 167,661.75 is: 251,150.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,765.45 : 487,982.95 = 167,661.75 : x
  2. Step 2: Convert to fraction form
    325,765.45/487,982.95 = 167,661.75/x
  3. Step 3: Cross multiply
    325,765.45x = 487,982.95 × 167,661.75
  4. Step 4: Simplify right side
    325,765.45x = 81,816,075,367.16
  5. Step 5: Solve for x
    x = 81,816,075,367.16/325,765.45
  6. Step 6: Final answer
    x = 251,150.25

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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.