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Finding the Fourth Proportional to 21,793.82, 32,687.64 and 7,000.79

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Solution

The fourth proportional to 21,793.82, 32,687.64 and 7,000.79 is: 10,500.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,793.82 : 32,687.64 = 7,000.79 : x
  2. Step 2: Convert to fraction form
    21,793.82/32,687.64 = 7,000.79/x
  3. Step 3: Cross multiply
    21,793.82x = 32,687.64 × 7,000.79
  4. Step 4: Simplify right side
    21,793.82x = 228,839,139.80
  5. Step 5: Solve for x
    x = 228,839,139.80/21,793.82
  6. Step 6: Final answer
    x = 10,500.19

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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.