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Finding the Fourth Proportional to 19,958.08, 27,540.88 and 11,005.08

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Solution

The fourth proportional to 19,958.08, 27,540.88 and 11,005.08 is: 15,186.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,958.08 : 27,540.88 = 11,005.08 : x
  2. Step 2: Convert to fraction form
    19,958.08/27,540.88 = 11,005.08/x
  3. Step 3: Cross multiply
    19,958.08x = 27,540.88 × 11,005.08
  4. Step 4: Simplify right side
    19,958.08x = 303,089,587.67
  5. Step 5: Solve for x
    x = 303,089,587.67/19,958.08
  6. Step 6: Final answer
    x = 15,186.31

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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.