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Finding the Fourth Proportional to 18,461.43, 25,485.17 and 11,756.12

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Solution

The fourth proportional to 18,461.43, 25,485.17 and 11,756.12 is: 16,228.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,461.43 : 25,485.17 = 11,756.12 : x
  2. Step 2: Convert to fraction form
    18,461.43/25,485.17 = 11,756.12/x
  3. Step 3: Cross multiply
    18,461.43x = 25,485.17 × 11,756.12
  4. Step 4: Simplify right side
    18,461.43x = 299,606,530.53
  5. Step 5: Solve for x
    x = 299,606,530.53/18,461.43
  6. Step 6: Final answer
    x = 16,228.78

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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.