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Finding the Third Proportional to 13,484.50 and 15,550

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Solution

The third proportional to 13,484.50 and 15,550 is: 17,931.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,484.50 : 15,550 = 15,550 : x
  2. Step 2: Convert to fraction form
    13,484.50/15,550 = 15,550/x
  3. Step 3: Cross multiply
    13,484.50x = 15,550 × 15,550
  4. Step 4: Simplify right side
    13,484.50x = 241,802,500
  5. Step 5: Solve for x
    x = 241,802,500/13,484.50
  6. Step 6: Final answer
    x = 17,931.88

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.