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Finding the Third Proportional to 3,167.50 and 4,916.50

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Solution

The third proportional to 3,167.50 and 4,916.50 is: 7,631.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,167.50 : 4,916.50 = 4,916.50 : x
  2. Step 2: Convert to fraction form
    3,167.50/4,916.50 = 4,916.50/x
  3. Step 3: Cross multiply
    3,167.50x = 4,916.50 × 4,916.50
  4. Step 4: Simplify right side
    3,167.50x = 24,171,972.25
  5. Step 5: Solve for x
    x = 24,171,972.25/3,167.50
  6. Step 6: Final answer
    x = 7,631.25

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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.