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Finding the Fourth Proportional to 14,524.92, 21,789.24 and 7,129.56

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Solution

The fourth proportional to 14,524.92, 21,789.24 and 7,129.56 is: 10,695.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,524.92 : 21,789.24 = 7,129.56 : x
  2. Step 2: Convert to fraction form
    14,524.92/21,789.24 = 7,129.56/x
  3. Step 3: Cross multiply
    14,524.92x = 21,789.24 × 7,129.56
  4. Step 4: Simplify right side
    14,524.92x = 155,347,693.93
  5. Step 5: Solve for x
    x = 155,347,693.93/14,524.92
  6. Step 6: Final answer
    x = 10,695.25

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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.