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Finding the Fourth Proportional to 29,321.76, 40,425.96 and 18,692.94

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Solution

The fourth proportional to 29,321.76, 40,425.96 and 18,692.94 is: 25,771.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,321.76 : 40,425.96 = 18,692.94 : x
  2. Step 2: Convert to fraction form
    29,321.76/40,425.96 = 18,692.94/x
  3. Step 3: Cross multiply
    29,321.76x = 40,425.96 × 18,692.94
  4. Step 4: Simplify right side
    29,321.76x = 755,680,044.72
  5. Step 5: Solve for x
    x = 755,680,044.72/29,321.76
  6. Step 6: Final answer
    x = 25,771.99

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1.5x scale

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.