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Finding the Third Proportional to 7,461 and 11,713.50

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Solution

The third proportional to 7,461 and 11,713.50 is: 18,389.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,461 : 11,713.50 = 11,713.50 : x
  2. Step 2: Convert to fraction form
    7,461/11,713.50 = 11,713.50/x
  3. Step 3: Cross multiply
    7,461x = 11,713.50 × 11,713.50
  4. Step 4: Simplify right side
    7,461x = 137,206,082.25
  5. Step 5: Solve for x
    x = 137,206,082.25/7,461
  6. Step 6: Final answer
    x = 18,389.77

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.