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Finding the Fourth Proportional to 18,712.96, 27,932.30 and 16,498.48

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Solution

The fourth proportional to 18,712.96, 27,932.30 and 16,498.48 is: 24,626.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,712.96 : 27,932.30 = 16,498.48 : x
  2. Step 2: Convert to fraction form
    18,712.96/27,932.30 = 16,498.48/x
  3. Step 3: Cross multiply
    18,712.96x = 27,932.30 × 16,498.48
  4. Step 4: Simplify right side
    18,712.96x = 460,840,492.90
  5. Step 5: Solve for x
    x = 460,840,492.90/18,712.96
  6. Step 6: Final answer
    x = 24,626.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.