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Finding the Fourth Proportional to 18,774.48, 25,885.26 and 12,048.24

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Solution

The fourth proportional to 18,774.48, 25,885.26 and 12,048.24 is: 16,611.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774.48 : 25,885.26 = 12,048.24 : x
  2. Step 2: Convert to fraction form
    18,774.48/25,885.26 = 12,048.24/x
  3. Step 3: Cross multiply
    18,774.48x = 25,885.26 × 12,048.24
  4. Step 4: Simplify right side
    18,774.48x = 311,871,824.94
  5. Step 5: Solve for x
    x = 311,871,824.94/18,774.48
  6. Step 6: Final answer
    x = 16,611.48

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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.