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Finding the Third Proportional to 3,316.50 and 5,136

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Solution

The third proportional to 3,316.50 and 5,136 is: 7,953.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,316.50 : 5,136 = 5,136 : x
  2. Step 2: Convert to fraction form
    3,316.50/5,136 = 5,136/x
  3. Step 3: Cross multiply
    3,316.50x = 5,136 × 5,136
  4. Step 4: Simplify right side
    3,316.50x = 26,378,496
  5. Step 5: Solve for x
    x = 26,378,496/3,316.50
  6. Step 6: Final answer
    x = 7,953.72

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.