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Finding the Third Proportional to 4,557 and 7,080

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Solution

The third proportional to 4,557 and 7,080 is: 10,999.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,557 : 7,080 = 7,080 : x
  2. Step 2: Convert to fraction form
    4,557/7,080 = 7,080/x
  3. Step 3: Cross multiply
    4,557x = 7,080 × 7,080
  4. Step 4: Simplify right side
    4,557x = 50,126,400
  5. Step 5: Solve for x
    x = 50,126,400/4,557
  6. Step 6: Final answer
    x = 10,999.87

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.