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Finding the Fourth Proportional to 18,645.81, 27,968.72 and 17,505.33

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Solution

The fourth proportional to 18,645.81, 27,968.72 and 17,505.33 is: 26,258.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,645.81 : 27,968.72 = 17,505.33 : x
  2. Step 2: Convert to fraction form
    18,645.81/27,968.72 = 17,505.33/x
  3. Step 3: Cross multiply
    18,645.81x = 27,968.72 × 17,505.33
  4. Step 4: Simplify right side
    18,645.81x = 489,601,585.75
  5. Step 5: Solve for x
    x = 489,601,585.75/18,645.81
  6. Step 6: Final answer
    x = 26,258.00

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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.