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Finding the Third Proportional to 15,990.50 and 25,545.75

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Solution

The third proportional to 15,990.50 and 25,545.75 is: 40,810.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,990.50 : 25,545.75 = 25,545.75 : x
  2. Step 2: Convert to fraction form
    15,990.50/25,545.75 = 25,545.75/x
  3. Step 3: Cross multiply
    15,990.50x = 25,545.75 × 25,545.75
  4. Step 4: Simplify right side
    15,990.50x = 652,585,343.06
  5. Step 5: Solve for x
    x = 652,585,343.06/15,990.50
  6. Step 6: Final answer
    x = 40,810.82

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.