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Finding the Fourth Proportional to 13,752.70, 20,625.00 and 5,855.12

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Solution

The fourth proportional to 13,752.70, 20,625.00 and 5,855.12 is: 8,780.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,752.70 : 20,625.00 = 5,855.12 : x
  2. Step 2: Convert to fraction form
    13,752.70/20,625.00 = 5,855.12/x
  3. Step 3: Cross multiply
    13,752.70x = 20,625.00 × 5,855.12
  4. Step 4: Simplify right side
    13,752.70x = 120,761,938.68
  5. Step 5: Solve for x
    x = 120,761,938.68/13,752.70
  6. Step 6: Final answer
    x = 8,780.96

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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.