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Finding the Fourth Proportional to 18,492.68, 25,524.64 and 11,415.04

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Solution

The fourth proportional to 18,492.68, 25,524.64 and 11,415.04 is: 15,755.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,492.68 : 25,524.64 = 11,415.04 : x
  2. Step 2: Convert to fraction form
    18,492.68/25,524.64 = 11,415.04/x
  3. Step 3: Cross multiply
    18,492.68x = 25,524.64 × 11,415.04
  4. Step 4: Simplify right side
    18,492.68x = 291,364,786.59
  5. Step 5: Solve for x
    x = 291,364,786.59/18,492.68
  6. Step 6: Final answer
    x = 15,755.68

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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.