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Finding the Fourth Proportional to 2,098.82, 3,147.14 and 782.04

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Solution

The fourth proportional to 2,098.82, 3,147.14 and 782.04 is: 1,172.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,098.82 : 3,147.14 = 782.04 : x
  2. Step 2: Convert to fraction form
    2,098.82/3,147.14 = 782.04/x
  3. Step 3: Cross multiply
    2,098.82x = 3,147.14 × 782.04
  4. Step 4: Simplify right side
    2,098.82x = 2,461,189.37
  5. Step 5: Solve for x
    x = 2,461,189.37/2,098.82
  6. Step 6: Final answer
    x = 1,172.65

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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.