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Finding the Third Proportional to 21,480 and 32,376

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Solution

The third proportional to 21,480 and 32,376 is: 48,799.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,480 : 32,376 = 32,376 : x
  2. Step 2: Convert to fraction form
    21,480/32,376 = 32,376/x
  3. Step 3: Cross multiply
    21,480x = 32,376 × 32,376
  4. Step 4: Simplify right side
    21,480x = 1,048,205,376
  5. Step 5: Solve for x
    x = 1,048,205,376/21,480
  6. Step 6: Final answer
    x = 48,799.13

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.