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Finding the Fourth Proportional to 1,196.44, 1,655.02 and 999.60

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Solution

The fourth proportional to 1,196.44, 1,655.02 and 999.60 is: 1,382.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,196.44 : 1,655.02 = 999.60 : x
  2. Step 2: Convert to fraction form
    1,196.44/1,655.02 = 999.60/x
  3. Step 3: Cross multiply
    1,196.44x = 1,655.02 × 999.60
  4. Step 4: Simplify right side
    1,196.44x = 1,654,357.99
  5. Step 5: Solve for x
    x = 1,654,357.99/1,196.44
  6. Step 6: Final answer
    x = 1,382.73

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Why These Related Problems?

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