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Finding the Fourth Proportional to 1,433.71, 1,978.69 and 804.41

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Solution

The fourth proportional to 1,433.71, 1,978.69 and 804.41 is: 1,110.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433.71 : 1,978.69 = 804.41 : x
  2. Step 2: Convert to fraction form
    1,433.71/1,978.69 = 804.41/x
  3. Step 3: Cross multiply
    1,433.71x = 1,978.69 × 804.41
  4. Step 4: Simplify right side
    1,433.71x = 1,591,674.00
  5. Step 5: Solve for x
    x = 1,591,674.00/1,433.71
  6. Step 6: Final answer
    x = 1,110.18

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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.