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Finding the Fourth Proportional to 13,709.99, 20,573.18 and 12,594.62

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Solution

The fourth proportional to 13,709.99, 20,573.18 and 12,594.62 is: 18,899.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,709.99 : 20,573.18 = 12,594.62 : x
  2. Step 2: Convert to fraction form
    13,709.99/20,573.18 = 12,594.62/x
  3. Step 3: Cross multiply
    13,709.99x = 20,573.18 × 12,594.62
  4. Step 4: Simplify right side
    13,709.99x = 259,111,419.98
  5. Step 5: Solve for x
    x = 259,111,419.98/13,709.99
  6. Step 6: Final answer
    x = 18,899.46

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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.