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Finding the Fourth Proportional to 1,492.28, 2,060.21 and 996.56

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Solution

The fourth proportional to 1,492.28, 2,060.21 and 996.56 is: 1,375.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,492.28 : 2,060.21 = 996.56 : x
  2. Step 2: Convert to fraction form
    1,492.28/2,060.21 = 996.56/x
  3. Step 3: Cross multiply
    1,492.28x = 2,060.21 × 996.56
  4. Step 4: Simplify right side
    1,492.28x = 2,053,117.89
  5. Step 5: Solve for x
    x = 2,053,117.89/1,492.28
  6. Step 6: Final answer
    x = 1,375.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.