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Finding the Fourth Proportional to 18,906.56, 26,084.05 and 18,877.40

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Solution

The fourth proportional to 18,906.56, 26,084.05 and 18,877.40 is: 26,043.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,906.56 : 26,084.05 = 18,877.40 : x
  2. Step 2: Convert to fraction form
    18,906.56/26,084.05 = 18,877.40/x
  3. Step 3: Cross multiply
    18,906.56x = 26,084.05 × 18,877.40
  4. Step 4: Simplify right side
    18,906.56x = 492,398,867.86
  5. Step 5: Solve for x
    x = 492,398,867.86/18,906.56
  6. Step 6: Final answer
    x = 26,043.82

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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.