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Finding the Fourth Proportional to 14,821.70, 20,450.88 and 8,446.93

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Solution

The fourth proportional to 14,821.70, 20,450.88 and 8,446.93 is: 11,655.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,821.70 : 20,450.88 = 8,446.93 : x
  2. Step 2: Convert to fraction form
    14,821.70/20,450.88 = 8,446.93/x
  3. Step 3: Cross multiply
    14,821.70x = 20,450.88 × 8,446.93
  4. Step 4: Simplify right side
    14,821.70x = 172,747,100.67
  5. Step 5: Solve for x
    x = 172,747,100.67/14,821.70
  6. Step 6: Final answer
    x = 11,655.02

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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.