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Finding the Fourth Proportional to 73,766.84, 110,650.94 and 21,176.32

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Solution

The fourth proportional to 73,766.84, 110,650.94 and 21,176.32 is: 31,764.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,766.84 : 110,650.94 = 21,176.32 : x
  2. Step 2: Convert to fraction form
    73,766.84/110,650.94 = 21,176.32/x
  3. Step 3: Cross multiply
    73,766.84x = 110,650.94 × 21,176.32
  4. Step 4: Simplify right side
    73,766.84x = 2,343,179,713.74
  5. Step 5: Solve for x
    x = 2,343,179,713.74/73,766.84
  6. Step 6: Final answer
    x = 31,764.68

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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.