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Finding the Fourth Proportional to 21,860.77, 32,791.17 and 9,372.73

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Solution

The fourth proportional to 21,860.77, 32,791.17 and 9,372.73 is: 14,059.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,860.77 : 32,791.17 = 9,372.73 : x
  2. Step 2: Convert to fraction form
    21,860.77/32,791.17 = 9,372.73/x
  3. Step 3: Cross multiply
    21,860.77x = 32,791.17 × 9,372.73
  4. Step 4: Simplify right side
    21,860.77x = 307,342,782.79
  5. Step 5: Solve for x
    x = 307,342,782.79/21,860.77
  6. Step 6: Final answer
    x = 14,059.10

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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.