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Finding the Third Proportional to 21,454.50 and 47,271

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Solution

The third proportional to 21,454.50 and 47,271 is: 104,152.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,454.50 : 47,271 = 47,271 : x
  2. Step 2: Convert to fraction form
    21,454.50/47,271 = 47,271/x
  3. Step 3: Cross multiply
    21,454.50x = 47,271 × 47,271
  4. Step 4: Simplify right side
    21,454.50x = 2,234,547,441
  5. Step 5: Solve for x
    x = 2,234,547,441/21,454.50
  6. Step 6: Final answer
    x = 104,152.86

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.