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Finding the Third Proportional to 720 and 1,184

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Solution

The third proportional to 720 and 1,184 is: 1,947.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    720 : 1,184 = 1,184 : x
  2. Step 2: Convert to fraction form
    720/1,184 = 1,184/x
  3. Step 3: Cross multiply
    720x = 1,184 × 1,184
  4. Step 4: Simplify right side
    720x = 1,401,856
  5. Step 5: Solve for x
    x = 1,401,856/720
  6. Step 6: Final answer
    x = 1,947.02

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.