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Finding the Fourth Proportional to 48,939.45, 68,670.75 and 48,939.45

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Solution

The fourth proportional to 48,939.45, 68,670.75 and 48,939.45 is: 68,670.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,939.45 : 68,670.75 = 48,939.45 : x
  2. Step 2: Convert to fraction form
    48,939.45/68,670.75 = 48,939.45/x
  3. Step 3: Cross multiply
    48,939.45x = 68,670.75 × 48,939.45
  4. Step 4: Simplify right side
    48,939.45x = 3,360,708,736.09
  5. Step 5: Solve for x
    x = 3,360,708,736.09/48,939.45
  6. Step 6: Final answer
    x = 68,670.75

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.