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Finding the Fourth Proportional to 13,859.62, 20,776.47 and 5,092.18

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Solution

The fourth proportional to 13,859.62, 20,776.47 and 5,092.18 is: 7,633.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,859.62 : 20,776.47 = 5,092.18 : x
  2. Step 2: Convert to fraction form
    13,859.62/20,776.47 = 5,092.18/x
  3. Step 3: Cross multiply
    13,859.62x = 20,776.47 × 5,092.18
  4. Step 4: Simplify right side
    13,859.62x = 105,797,525.00
  5. Step 5: Solve for x
    x = 105,797,525.00/13,859.62
  6. Step 6: Final answer
    x = 7,633.51

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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.