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Finding the Fourth Proportional to 66,470.58, 91,730.49 and 36,255.90

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Solution

The fourth proportional to 66,470.58, 91,730.49 and 36,255.90 is: 50,033.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,470.58 : 91,730.49 = 36,255.90 : x
  2. Step 2: Convert to fraction form
    66,470.58/91,730.49 = 36,255.90/x
  3. Step 3: Cross multiply
    66,470.58x = 91,730.49 × 36,255.90
  4. Step 4: Simplify right side
    66,470.58x = 3,325,771,472.39
  5. Step 5: Solve for x
    x = 3,325,771,472.39/66,470.58
  6. Step 6: Final answer
    x = 50,033.74

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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.