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Finding the Fourth Proportional to 21,098.73, 31,650.48 and 7,060.62

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Solution

The fourth proportional to 21,098.73, 31,650.48 and 7,060.62 is: 10,591.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,098.73 : 31,650.48 = 7,060.62 : x
  2. Step 2: Convert to fraction form
    21,098.73/31,650.48 = 7,060.62/x
  3. Step 3: Cross multiply
    21,098.73x = 31,650.48 × 7,060.62
  4. Step 4: Simplify right side
    21,098.73x = 223,472,012.10
  5. Step 5: Solve for x
    x = 223,472,012.10/21,098.73
  6. Step 6: Final answer
    x = 10,591.73

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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.