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Finding the Third Proportional to 48,234.50 and 74,678

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Solution

The third proportional to 48,234.50 and 74,678 is: 115,618.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,234.50 : 74,678 = 74,678 : x
  2. Step 2: Convert to fraction form
    48,234.50/74,678 = 74,678/x
  3. Step 3: Cross multiply
    48,234.50x = 74,678 × 74,678
  4. Step 4: Simplify right side
    48,234.50x = 5,576,803,684
  5. Step 5: Solve for x
    x = 5,576,803,684/48,234.50
  6. Step 6: Final answer
    x = 115,618.57

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.