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Finding the Third Proportional to 3,390.19 and 4,932.56

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Solution

The third proportional to 3,390.19 and 4,932.56 is: 7,176.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.19 : 4,932.56 = 4,932.56 : x
  2. Step 2: Convert to fraction form
    3,390.19/4,932.56 = 4,932.56/x
  3. Step 3: Cross multiply
    3,390.19x = 4,932.56 × 4,932.56
  4. Step 4: Simplify right side
    3,390.19x = 24,330,172.82
  5. Step 5: Solve for x
    x = 24,330,172.82/3,390.19
  6. Step 6: Final answer
    x = 7,176.65

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.