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Finding the Fourth Proportional to 18,710.72, 28,060.24 and 6,227.82

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Solution

The fourth proportional to 18,710.72, 28,060.24 and 6,227.82 is: 9,339.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,710.72 : 28,060.24 = 6,227.82 : x
  2. Step 2: Convert to fraction form
    18,710.72/28,060.24 = 6,227.82/x
  3. Step 3: Cross multiply
    18,710.72x = 28,060.24 × 6,227.82
  4. Step 4: Simplify right side
    18,710.72x = 174,754,245.34
  5. Step 5: Solve for x
    x = 174,754,245.34/18,710.72
  6. Step 6: Final answer
    x = 9,339.79

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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.