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Finding the Third Proportional to 5,528 and 7,320

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Solution

The third proportional to 5,528 and 7,320 is: 9,692.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,528 : 7,320 = 7,320 : x
  2. Step 2: Convert to fraction form
    5,528/7,320 = 7,320/x
  3. Step 3: Cross multiply
    5,528x = 7,320 × 7,320
  4. Step 4: Simplify right side
    5,528x = 53,582,400
  5. Step 5: Solve for x
    x = 53,582,400/5,528
  6. Step 6: Final answer
    x = 9,692.91

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.