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Finding the Third Proportional to 12,480 and 16,472

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Solution

The third proportional to 12,480 and 16,472 is: 21,740.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480 : 16,472 = 16,472 : x
  2. Step 2: Convert to fraction form
    12,480/16,472 = 16,472/x
  3. Step 3: Cross multiply
    12,480x = 16,472 × 16,472
  4. Step 4: Simplify right side
    12,480x = 271,326,784
  5. Step 5: Solve for x
    x = 271,326,784/12,480
  6. Step 6: Final answer
    x = 21,740.93

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.