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Finding the Fourth Proportional to 14,859.15, 20,505.84 and 8,891.07

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Solution

The fourth proportional to 14,859.15, 20,505.84 and 8,891.07 is: 12,269.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,859.15 : 20,505.84 = 8,891.07 : x
  2. Step 2: Convert to fraction form
    14,859.15/20,505.84 = 8,891.07/x
  3. Step 3: Cross multiply
    14,859.15x = 20,505.84 × 8,891.07
  4. Step 4: Simplify right side
    14,859.15x = 182,318,858.85
  5. Step 5: Solve for x
    x = 182,318,858.85/14,859.15
  6. Step 6: Final answer
    x = 12,269.80

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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.