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Finding the Fourth Proportional to 124,578.88, 186,757.20 and 45,674.70

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Solution

The fourth proportional to 124,578.88, 186,757.20 and 45,674.70 is: 68,471.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,578.88 : 186,757.20 = 45,674.70 : x
  2. Step 2: Convert to fraction form
    124,578.88/186,757.20 = 45,674.70/x
  3. Step 3: Cross multiply
    124,578.88x = 186,757.20 × 45,674.70
  4. Step 4: Simplify right side
    124,578.88x = 8,530,079,082.84
  5. Step 5: Solve for x
    x = 8,530,079,082.84/124,578.88
  6. Step 6: Final answer
    x = 68,471.31

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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.