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Finding the Third Proportional to 7,130.53 and 11,362.78

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Solution

The third proportional to 7,130.53 and 11,362.78 is: 18,107.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.53 : 11,362.78 = 11,362.78 : x
  2. Step 2: Convert to fraction form
    7,130.53/11,362.78 = 11,362.78/x
  3. Step 3: Cross multiply
    7,130.53x = 11,362.78 × 11,362.78
  4. Step 4: Simplify right side
    7,130.53x = 129,112,797.74
  5. Step 5: Solve for x
    x = 129,112,797.74/7,130.53
  6. Step 6: Final answer
    x = 18,107.04

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.