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Finding the Third Proportional to 15,558.75 and 20,314.13

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Solution

The third proportional to 15,558.75 and 20,314.13 is: 26,522.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,558.75 : 20,314.13 = 20,314.13 : x
  2. Step 2: Convert to fraction form
    15,558.75/20,314.13 = 20,314.13/x
  3. Step 3: Cross multiply
    15,558.75x = 20,314.13 × 20,314.13
  4. Step 4: Simplify right side
    15,558.75x = 412,663,674.52
  5. Step 5: Solve for x
    x = 412,663,674.52/15,558.75
  6. Step 6: Final answer
    x = 26,522.93

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.