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Finding the Fourth Proportional to 1,696.18, 2,543.48 and 993.60

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Solution

The fourth proportional to 1,696.18, 2,543.48 and 993.60 is: 1,489.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,696.18 : 2,543.48 = 993.60 : x
  2. Step 2: Convert to fraction form
    1,696.18/2,543.48 = 993.60/x
  3. Step 3: Cross multiply
    1,696.18x = 2,543.48 × 993.60
  4. Step 4: Simplify right side
    1,696.18x = 2,527,201.73
  5. Step 5: Solve for x
    x = 2,527,201.73/1,696.18
  6. Step 6: Final answer
    x = 1,489.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.