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Finding the Fourth Proportional to 217,050.28, 325,587.72 and 67,311.85

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Solution

The fourth proportional to 217,050.28, 325,587.72 and 67,311.85 is: 100,971.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,050.28 : 325,587.72 = 67,311.85 : x
  2. Step 2: Convert to fraction form
    217,050.28/325,587.72 = 67,311.85/x
  3. Step 3: Cross multiply
    217,050.28x = 325,587.72 × 67,311.85
  4. Step 4: Simplify right side
    217,050.28x = 21,915,911,770.48
  5. Step 5: Solve for x
    x = 21,915,911,770.48/217,050.28
  6. Step 6: Final answer
    x = 100,971.59

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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.