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Finding the Third Proportional to 30,172 and 47,844

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Solution

The third proportional to 30,172 and 47,844 is: 75,866.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,172 : 47,844 = 47,844 : x
  2. Step 2: Convert to fraction form
    30,172/47,844 = 47,844/x
  3. Step 3: Cross multiply
    30,172x = 47,844 × 47,844
  4. Step 4: Simplify right side
    30,172x = 2,289,048,336
  5. Step 5: Solve for x
    x = 2,289,048,336/30,172
  6. Step 6: Final answer
    x = 75,866.64

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.