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Finding the Fourth Proportional to 18,472.99, 25,494.33 and 15,108.67

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Solution

The fourth proportional to 18,472.99, 25,494.33 and 15,108.67 is: 20,851.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,472.99 : 25,494.33 = 15,108.67 : x
  2. Step 2: Convert to fraction form
    18,472.99/25,494.33 = 15,108.67/x
  3. Step 3: Cross multiply
    18,472.99x = 25,494.33 × 15,108.67
  4. Step 4: Simplify right side
    18,472.99x = 385,185,418.84
  5. Step 5: Solve for x
    x = 385,185,418.84/18,472.99
  6. Step 6: Final answer
    x = 20,851.28

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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.