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Finding the Fourth Proportional to 1,374.03, 1,896.21 and 981.99

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Solution

The fourth proportional to 1,374.03, 1,896.21 and 981.99 is: 1,355.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,374.03 : 1,896.21 = 981.99 : x
  2. Step 2: Convert to fraction form
    1,374.03/1,896.21 = 981.99/x
  3. Step 3: Cross multiply
    1,374.03x = 1,896.21 × 981.99
  4. Step 4: Simplify right side
    1,374.03x = 1,862,059.26
  5. Step 5: Solve for x
    x = 1,862,059.26/1,374.03
  6. Step 6: Final answer
    x = 1,355.18

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