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Finding the Fourth Proportional to 18,461.01, 27,691.30 and 12,523.18

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Solution

The fourth proportional to 18,461.01, 27,691.30 and 12,523.18 is: 18,784.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,461.01 : 27,691.30 = 12,523.18 : x
  2. Step 2: Convert to fraction form
    18,461.01/27,691.30 = 12,523.18/x
  3. Step 3: Cross multiply
    18,461.01x = 27,691.30 × 12,523.18
  4. Step 4: Simplify right side
    18,461.01x = 346,783,210.56
  5. Step 5: Solve for x
    x = 346,783,210.56/18,461.01
  6. Step 6: Final answer
    x = 18,784.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.