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Finding the Fourth Proportional to 19,644.24, 29,471.68 and 7,965.60

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Solution

The fourth proportional to 19,644.24, 29,471.68 and 7,965.60 is: 11,950.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,644.24 : 29,471.68 = 7,965.60 : x
  2. Step 2: Convert to fraction form
    19,644.24/29,471.68 = 7,965.60/x
  3. Step 3: Cross multiply
    19,644.24x = 29,471.68 × 7,965.60
  4. Step 4: Simplify right side
    19,644.24x = 234,759,614.21
  5. Step 5: Solve for x
    x = 234,759,614.21/19,644.24
  6. Step 6: Final answer
    x = 11,950.56

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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.