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Finding the Fourth Proportional to 47,016.80, 70,524.88 and 11,956

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Solution

The fourth proportional to 47,016.80, 70,524.88 and 11,956 is: 17,933.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,016.80 : 70,524.88 = 11,956 : x
  2. Step 2: Convert to fraction form
    47,016.80/70,524.88 = 11,956/x
  3. Step 3: Cross multiply
    47,016.80x = 70,524.88 × 11,956
  4. Step 4: Simplify right side
    47,016.80x = 843,195,465.28
  5. Step 5: Solve for x
    x = 843,195,465.28/47,016.80
  6. Step 6: Final answer
    x = 17,933.92

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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.