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Finding the Fourth Proportional to 2,082.98, 3,123.86 and 784.14

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Solution

The fourth proportional to 2,082.98, 3,123.86 and 784.14 is: 1,175.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.98 : 3,123.86 = 784.14 : x
  2. Step 2: Convert to fraction form
    2,082.98/3,123.86 = 784.14/x
  3. Step 3: Cross multiply
    2,082.98x = 3,123.86 × 784.14
  4. Step 4: Simplify right side
    2,082.98x = 2,449,539.66
  5. Step 5: Solve for x
    x = 2,449,539.66/2,082.98
  6. Step 6: Final answer
    x = 1,175.98

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.