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Finding the Fourth Proportional to 74,614.85, 102,977.43 and 43,994.88

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Solution

The fourth proportional to 74,614.85, 102,977.43 and 43,994.88 is: 60,718.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,614.85 : 102,977.43 = 43,994.88 : x
  2. Step 2: Convert to fraction form
    74,614.85/102,977.43 = 43,994.88/x
  3. Step 3: Cross multiply
    74,614.85x = 102,977.43 × 43,994.88
  4. Step 4: Simplify right side
    74,614.85x = 4,530,479,510.58
  5. Step 5: Solve for x
    x = 4,530,479,510.58/74,614.85
  6. Step 6: Final answer
    x = 60,718.20

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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.