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Finding the Fourth Proportional to 18,113.46, 24,993.18 and 11,658.78

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Solution

The fourth proportional to 18,113.46, 24,993.18 and 11,658.78 is: 16,086.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,113.46 : 24,993.18 = 11,658.78 : x
  2. Step 2: Convert to fraction form
    18,113.46/24,993.18 = 11,658.78/x
  3. Step 3: Cross multiply
    18,113.46x = 24,993.18 × 11,658.78
  4. Step 4: Simplify right side
    18,113.46x = 291,389,987.12
  5. Step 5: Solve for x
    x = 291,389,987.12/18,113.46
  6. Step 6: Final answer
    x = 16,086.93

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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.