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Finding the Fourth Proportional to 1,170.66, 1,757.08 and 897.42

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Solution

The fourth proportional to 1,170.66, 1,757.08 and 897.42 is: 1,346.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,170.66 : 1,757.08 = 897.42 : x
  2. Step 2: Convert to fraction form
    1,170.66/1,757.08 = 897.42/x
  3. Step 3: Cross multiply
    1,170.66x = 1,757.08 × 897.42
  4. Step 4: Simplify right side
    1,170.66x = 1,576,838.73
  5. Step 5: Solve for x
    x = 1,576,838.73/1,170.66
  6. Step 6: Final answer
    x = 1,346.97

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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.