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Finding the Fourth Proportional to 65,228.88, 90,017.69 and 36,934.57

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Solution

The fourth proportional to 65,228.88, 90,017.69 and 36,934.57 is: 50,970.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,228.88 : 90,017.69 = 36,934.57 : x
  2. Step 2: Convert to fraction form
    65,228.88/90,017.69 = 36,934.57/x
  3. Step 3: Cross multiply
    65,228.88x = 90,017.69 × 36,934.57
  4. Step 4: Simplify right side
    65,228.88x = 3,324,764,672.54
  5. Step 5: Solve for x
    x = 3,324,764,672.54/65,228.88
  6. Step 6: Final answer
    x = 50,970.75

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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.