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Finding the Fourth Proportional to 1,176.05, 1,764.08 and 956.42

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Solution

The fourth proportional to 1,176.05, 1,764.08 and 956.42 is: 1,434.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.05 : 1,764.08 = 956.42 : x
  2. Step 2: Convert to fraction form
    1,176.05/1,764.08 = 956.42/x
  3. Step 3: Cross multiply
    1,176.05x = 1,764.08 × 956.42
  4. Step 4: Simplify right side
    1,176.05x = 1,687,196.98
  5. Step 5: Solve for x
    x = 1,687,196.98/1,176.05
  6. Step 6: Final answer
    x = 1,434.63

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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.