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Finding the Fourth Proportional to 18,065.92, 24,911.71 and 12,408.88

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Solution

The fourth proportional to 18,065.92, 24,911.71 and 12,408.88 is: 17,111.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,065.92 : 24,911.71 = 12,408.88 : x
  2. Step 2: Convert to fraction form
    18,065.92/24,911.71 = 12,408.88/x
  3. Step 3: Cross multiply
    18,065.92x = 24,911.71 × 12,408.88
  4. Step 4: Simplify right side
    18,065.92x = 309,126,419.98
  5. Step 5: Solve for x
    x = 309,126,419.98/18,065.92
  6. Step 6: Final answer
    x = 17,111.03

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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.