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Finding the Fourth Proportional to 248,617.70, 372,926.55 and 82,405.70

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Solution

The fourth proportional to 248,617.70, 372,926.55 and 82,405.70 is: 123,608.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,617.70 : 372,926.55 = 82,405.70 : x
  2. Step 2: Convert to fraction form
    248,617.70/372,926.55 = 82,405.70/x
  3. Step 3: Cross multiply
    248,617.70x = 372,926.55 × 82,405.70
  4. Step 4: Simplify right side
    248,617.70x = 30,731,273,401.34
  5. Step 5: Solve for x
    x = 30,731,273,401.34/248,617.70
  6. Step 6: Final answer
    x = 123,608.55

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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.