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Finding the Third Proportional to 14,188.50 and 21,480

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Solution

The third proportional to 14,188.50 and 21,480 is: 32,518.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,188.50 : 21,480 = 21,480 : x
  2. Step 2: Convert to fraction form
    14,188.50/21,480 = 21,480/x
  3. Step 3: Cross multiply
    14,188.50x = 21,480 × 21,480
  4. Step 4: Simplify right side
    14,188.50x = 461,390,400
  5. Step 5: Solve for x
    x = 461,390,400/14,188.50
  6. Step 6: Final answer
    x = 32,518.62

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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.