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Finding the Fourth Proportional to 14,859.56, 20,507.11 and 8,571.94

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Solution

The fourth proportional to 14,859.56, 20,507.11 and 8,571.94 is: 11,829.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,859.56 : 20,507.11 = 8,571.94 : x
  2. Step 2: Convert to fraction form
    14,859.56/20,507.11 = 8,571.94/x
  3. Step 3: Cross multiply
    14,859.56x = 20,507.11 × 8,571.94
  4. Step 4: Simplify right side
    14,859.56x = 175,785,643.80
  5. Step 5: Solve for x
    x = 175,785,643.80/14,859.56
  6. Step 6: Final answer
    x = 11,829.80

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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.