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Finding the Fourth Proportional to 74,604.72, 102,986.39 and 44,392.87

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Solution

The fourth proportional to 74,604.72, 102,986.39 and 44,392.87 is: 61,281.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,604.72 : 102,986.39 = 44,392.87 : x
  2. Step 2: Convert to fraction form
    74,604.72/102,986.39 = 44,392.87/x
  3. Step 3: Cross multiply
    74,604.72x = 102,986.39 × 44,392.87
  4. Step 4: Simplify right side
    74,604.72x = 4,571,861,423.04
  5. Step 5: Solve for x
    x = 4,571,861,423.04/74,604.72
  6. Step 6: Final answer
    x = 61,281.13

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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.