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Finding the Fourth Proportional to 82,392.38, 113,591.52 and 65,452.85

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Solution

The fourth proportional to 82,392.38, 113,591.52 and 65,452.85 is: 90,237.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,392.38 : 113,591.52 = 65,452.85 : x
  2. Step 2: Convert to fraction form
    82,392.38/113,591.52 = 65,452.85/x
  3. Step 3: Cross multiply
    82,392.38x = 113,591.52 × 65,452.85
  4. Step 4: Simplify right side
    82,392.38x = 7,434,888,151.87
  5. Step 5: Solve for x
    x = 7,434,888,151.87/82,392.38
  6. Step 6: Final answer
    x = 90,237.58

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1.5x scale

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.