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Finding the Fourth Proportional to 1,192.88, 1,789.28 and 535.36

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Solution

The fourth proportional to 1,192.88, 1,789.28 and 535.36 is: 803.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192.88 : 1,789.28 = 535.36 : x
  2. Step 2: Convert to fraction form
    1,192.88/1,789.28 = 535.36/x
  3. Step 3: Cross multiply
    1,192.88x = 1,789.28 × 535.36
  4. Step 4: Simplify right side
    1,192.88x = 957,908.94
  5. Step 5: Solve for x
    x = 957,908.94/1,192.88
  6. Step 6: Final answer
    x = 803.02

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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.