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Finding the Third Proportional to 4,789 and 7,473

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Solution

The third proportional to 4,789 and 7,473 is: 11,661.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,789 : 7,473 = 7,473 : x
  2. Step 2: Convert to fraction form
    4,789/7,473 = 7,473/x
  3. Step 3: Cross multiply
    4,789x = 7,473 × 7,473
  4. Step 4: Simplify right side
    4,789x = 55,845,729
  5. Step 5: Solve for x
    x = 55,845,729/4,789
  6. Step 6: Final answer
    x = 11,661.25

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.