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Finding the Fourth Proportional to 77,899.81, 107,375.79 and 60,874.46

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Solution

The fourth proportional to 77,899.81, 107,375.79 and 60,874.46 is: 83,908.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,899.81 : 107,375.79 = 60,874.46 : x
  2. Step 2: Convert to fraction form
    77,899.81/107,375.79 = 60,874.46/x
  3. Step 3: Cross multiply
    77,899.81x = 107,375.79 × 60,874.46
  4. Step 4: Simplify right side
    77,899.81x = 6,536,443,233.32
  5. Step 5: Solve for x
    x = 6,536,443,233.32/77,899.81
  6. Step 6: Final answer
    x = 83,908.33

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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.