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Finding the Third Proportional to 7,611.75 and 11,386.13

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Solution

The third proportional to 7,611.75 and 11,386.13 is: 17,032.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,611.75 : 11,386.13 = 11,386.13 : x
  2. Step 2: Convert to fraction form
    7,611.75/11,386.13 = 11,386.13/x
  3. Step 3: Cross multiply
    7,611.75x = 11,386.13 × 11,386.13
  4. Step 4: Simplify right side
    7,611.75x = 129,643,842.52
  5. Step 5: Solve for x
    x = 129,643,842.52/7,611.75
  6. Step 6: Final answer
    x = 17,032.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.