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Finding the Fourth Proportional to 77,476.84, 106,912.74 and 43,481.32

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Solution

The fourth proportional to 77,476.84, 106,912.74 and 43,481.32 is: 60,001.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,476.84 : 106,912.74 = 43,481.32 : x
  2. Step 2: Convert to fraction form
    77,476.84/106,912.74 = 43,481.32/x
  3. Step 3: Cross multiply
    77,476.84x = 106,912.74 × 43,481.32
  4. Step 4: Simplify right side
    77,476.84x = 4,648,707,060.02
  5. Step 5: Solve for x
    x = 4,648,707,060.02/77,476.84
  6. Step 6: Final answer
    x = 60,001.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.