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Finding the Fourth Proportional to 15,059.79, 20,775.90 and 10,586.43

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Solution

The fourth proportional to 15,059.79, 20,775.90 and 10,586.43 is: 14,604.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,059.79 : 20,775.90 = 10,586.43 : x
  2. Step 2: Convert to fraction form
    15,059.79/20,775.90 = 10,586.43/x
  3. Step 3: Cross multiply
    15,059.79x = 20,775.90 × 10,586.43
  4. Step 4: Simplify right side
    15,059.79x = 219,942,611.04
  5. Step 5: Solve for x
    x = 219,942,611.04/15,059.79
  6. Step 6: Final answer
    x = 14,604.63

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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.