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Finding the Fourth Proportional to 173,319.20, 259,687.20 and 162,821.60

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Solution

The fourth proportional to 173,319.20, 259,687.20 and 162,821.60 is: 243,958.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,319.20 : 259,687.20 = 162,821.60 : x
  2. Step 2: Convert to fraction form
    173,319.20/259,687.20 = 162,821.60/x
  3. Step 3: Cross multiply
    173,319.20x = 259,687.20 × 162,821.60
  4. Step 4: Simplify right side
    173,319.20x = 42,282,685,403.52
  5. Step 5: Solve for x
    x = 42,282,685,403.52/173,319.20
  6. Step 6: Final answer
    x = 243,958.46

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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.