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Finding the Fourth Proportional to 14,910.98, 20,575.50 and 8,942.90

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Solution

The fourth proportional to 14,910.98, 20,575.50 and 8,942.90 is: 12,340.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,910.98 : 20,575.50 = 8,942.90 : x
  2. Step 2: Convert to fraction form
    14,910.98/20,575.50 = 8,942.90/x
  3. Step 3: Cross multiply
    14,910.98x = 20,575.50 × 8,942.90
  4. Step 4: Simplify right side
    14,910.98x = 184,004,638.95
  5. Step 5: Solve for x
    x = 184,004,638.95/14,910.98
  6. Step 6: Final answer
    x = 12,340.21

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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.