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Finding the Third Proportional to 4,808 and 7,040

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Solution

The third proportional to 4,808 and 7,040 is: 10,308.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,808 : 7,040 = 7,040 : x
  2. Step 2: Convert to fraction form
    4,808/7,040 = 7,040/x
  3. Step 3: Cross multiply
    4,808x = 7,040 × 7,040
  4. Step 4: Simplify right side
    4,808x = 49,561,600
  5. Step 5: Solve for x
    x = 49,561,600/4,808
  6. Step 6: Final answer
    x = 10,308.15

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.