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Finding the Fourth Proportional to 1,033.92, 1,423.44 and 926.64

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Solution

The fourth proportional to 1,033.92, 1,423.44 and 926.64 is: 1,275.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,033.92 : 1,423.44 = 926.64 : x
  2. Step 2: Convert to fraction form
    1,033.92/1,423.44 = 926.64/x
  3. Step 3: Cross multiply
    1,033.92x = 1,423.44 × 926.64
  4. Step 4: Simplify right side
    1,033.92x = 1,319,016.44
  5. Step 5: Solve for x
    x = 1,319,016.44/1,033.92
  6. Step 6: Final answer
    x = 1,275.74

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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.