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Finding the Fourth Proportional to 47,204.80, 70,790.88 and 20,927.92

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Solution

The fourth proportional to 47,204.80, 70,790.88 and 20,927.92 is: 31,384.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,204.80 : 70,790.88 = 20,927.92 : x
  2. Step 2: Convert to fraction form
    47,204.80/70,790.88 = 20,927.92/x
  3. Step 3: Cross multiply
    47,204.80x = 70,790.88 × 20,927.92
  4. Step 4: Simplify right side
    47,204.80x = 1,481,505,873.37
  5. Step 5: Solve for x
    x = 1,481,505,873.37/47,204.80
  6. Step 6: Final answer
    x = 31,384.64

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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.