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Finding the Third Proportional to 1,928.94 and 2,920.44

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Solution

The third proportional to 1,928.94 and 2,920.44 is: 4,421.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.94 : 2,920.44 = 2,920.44 : x
  2. Step 2: Convert to fraction form
    1,928.94/2,920.44 = 2,920.44/x
  3. Step 3: Cross multiply
    1,928.94x = 2,920.44 × 2,920.44
  4. Step 4: Simplify right side
    1,928.94x = 8,528,955.19
  5. Step 5: Solve for x
    x = 8,528,955.19/1,928.94
  6. Step 6: Final answer
    x = 4,421.58

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.