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Finding the Fourth Proportional to 1,959.40, 2,703.92 and 1,162.72

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Solution

The fourth proportional to 1,959.40, 2,703.92 and 1,162.72 is: 1,604.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959.40 : 2,703.92 = 1,162.72 : x
  2. Step 2: Convert to fraction form
    1,959.40/2,703.92 = 1,162.72/x
  3. Step 3: Cross multiply
    1,959.40x = 2,703.92 × 1,162.72
  4. Step 4: Simplify right side
    1,959.40x = 3,143,901.86
  5. Step 5: Solve for x
    x = 3,143,901.86/1,959.40
  6. Step 6: Final answer
    x = 1,604.52

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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.