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Finding the Fourth Proportional to 217,745.76, 326,618.51 and 67,998.88

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Solution

The fourth proportional to 217,745.76, 326,618.51 and 67,998.88 is: 101,998.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,745.76 : 326,618.51 = 67,998.88 : x
  2. Step 2: Convert to fraction form
    217,745.76/326,618.51 = 67,998.88/x
  3. Step 3: Cross multiply
    217,745.76x = 326,618.51 × 67,998.88
  4. Step 4: Simplify right side
    217,745.76x = 22,209,692,220.72
  5. Step 5: Solve for x
    x = 22,209,692,220.72/217,745.76
  6. Step 6: Final answer
    x = 101,998.28

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1.5x scale

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.