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Finding the Fourth Proportional to 1,981.01, 2,970.83 and 682.17

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Solution

The fourth proportional to 1,981.01, 2,970.83 and 682.17 is: 1,023.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.01 : 2,970.83 = 682.17 : x
  2. Step 2: Convert to fraction form
    1,981.01/2,970.83 = 682.17/x
  3. Step 3: Cross multiply
    1,981.01x = 2,970.83 × 682.17
  4. Step 4: Simplify right side
    1,981.01x = 2,026,614.54
  5. Step 5: Solve for x
    x = 2,026,614.54/1,981.01
  6. Step 6: Final answer
    x = 1,023.02

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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.