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Finding the Fourth Proportional to 1,141.92, 1,711.60 and 1,049.66

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Solution

The fourth proportional to 1,141.92, 1,711.60 and 1,049.66 is: 1,573.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,141.92 : 1,711.60 = 1,049.66 : x
  2. Step 2: Convert to fraction form
    1,141.92/1,711.60 = 1,049.66/x
  3. Step 3: Cross multiply
    1,141.92x = 1,711.60 × 1,049.66
  4. Step 4: Simplify right side
    1,141.92x = 1,796,598.06
  5. Step 5: Solve for x
    x = 1,796,598.06/1,141.92
  6. Step 6: Final answer
    x = 1,573.31

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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.