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Finding the Fourth Proportional to 1,067.92, 1,472.80 and 846.48

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Solution

The fourth proportional to 1,067.92, 1,472.80 and 846.48 is: 1,167.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,067.92 : 1,472.80 = 846.48 : x
  2. Step 2: Convert to fraction form
    1,067.92/1,472.80 = 846.48/x
  3. Step 3: Cross multiply
    1,067.92x = 1,472.80 × 846.48
  4. Step 4: Simplify right side
    1,067.92x = 1,246,695.74
  5. Step 5: Solve for x
    x = 1,246,695.74/1,067.92
  6. Step 6: Final answer
    x = 1,167.41

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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.